cups Can't add Canon ipp printer after cups version 2.4.6

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Describe the bug Can't add Canon ipp printer after cups version 2.4.6. Tested with all ubuntu versions one by one from 22.04 to 24.04. Mantic is the last one that works. I use Fedora 40 as the daily driver which also does not work.

To Reproduce

hannu@hannu-Standard-PC-Q35-ICH9-2009:~$ lpadmin -p canon -v ipp://192.168.20.7/ipp/print -E -m everywhere
lpadmin: Unable to create PPD: No IPP attributes.

with cups 2.4.7 and ubuntu
same behaviour with Fedora 40 cups-2.4.10-3.fc40.x86_64

Expected behavior Printer was added

Screenshots If applicable, add screenshots to help explain your problem.

System Information:

OS and its version: Ubuntu 24.04, Fedora 40
CUPS version 2.4.7, 2.7.10

Additional context I tested with ipptool. this does not work even on older cups versions, however the printer can be added and works when adding with lpadmin and manually changing the driver to generic IPP driver via Gnome printer settings on older versions.

ipptool

ipptool -tv ipp://192.168.20.7/ get-printer-attributes.test
"get-printer-attributes.test":
    Get-Printer-Attributes:
        attributes-charset (charset) = utf-8
        attributes-natural-language (naturalLanguage) = en
        printer-uri (uri) = ipp://192.168.20.7:631/
        requested-attributes (keyword) = all
    Get printer attributes using get-printer-attributes                  [FAIL]
        RECEIVED: 0 bytes in response
        status-code = server-error-internal-error (Unable to read response.)
        IPP request failed with status server-error-internal-error (Unable to read response.)

I captured traffic with wireshark during the above command. Printer responds and gives IPP parameters, however the ipptool says it did not get any. I will attach the wireshark capture to this report. Same behaviour with older or newer versions of the tested operating systems and cups versions

** Text representation of the reply from printer, whole capture as an attachment **

github would not allow wireshrk pcapng files so zipped it

Internet Printing Protocol
    [Request In: 5]
    [Response Time: 0.014304757 seconds]
    version: 2.0
    status-code: Successful (successful-ok)
    request-id: 20825
    operation-attributes-tag
        attributes-charset (charset): 'utf-8'
            name: attributes-charset
            charset value: utf-8
        attributes-natural-language (naturalLanguage): 'en-fi'
            name: attributes-natural-language
            naturalLanguage value: en-fi
    printer-attributes-tag
        printer-uri-supported (1setOf uri): 'ipp://192.168.20.7:631/ipp/print','ipp://192.168.20.7:631/ipp'
            name: printer-uri-supported
            uri value: ipp://192.168.20.7:631/ipp/print
            uri value: ipp://192.168.20.7:631/ipp
        uri-security-supported (1setOf keyword): 'none','none'
            name: uri-security-supported
            keyword value: none
            keyword value: none
        uri-authentication-supported (1setOf keyword): 'none','none'
            name: uri-authentication-supported
            keyword value: none
            keyword value: none
        printer-name (nameWithoutLanguage): 'MF645C'
            name: printer-name
            nameWithoutLanguage value: MF645C
        printer-location (textWithoutLanguage): ''
            name: printer-location
            textWithoutLanguage value: 
        printer-info (textWithoutLanguage): 'http://www.canon.com'
            name: printer-info
            textWithoutLanguage value: http://www.canon.com
        printer-more-info (uri): 'http://192.168.20.7:80/airprint.html'
            name: printer-more-info
            uri value: http://192.168.20.7:80/airprint.html
        printer-make-and-model (textWithoutLanguage): 'CNMF645C'
            name: printer-make-and-model
            textWithoutLanguage value: CNMF645C
        printer-state (enum): idle
            name: printer-state
            printer-state: idle (3)
        printer-state-reasons (keyword): 'none'
            name: printer-state-reasons
            keyword value: none
        ipp-versions-supported (1setOf keyword): '2.0','1.1','1.0'
            name: ipp-versions-supported
            keyword value: 2.0
            keyword value: 1.1
            keyword value: 1.0
        ipp-features-supported (keyword): 'airprint-1.8'
            name: ipp-features-supported
            keyword value: airprint-1.8
        operations-supported (1setOf enum): Print-Job,Validate-Job,Create-Job,Send-Document,Cancel-Job,Get-Job-Attributes,Get-Jobs,Get-Printer-Attributes,Identify-Printer
            name: operations-supported
            operations-supported: Print-Job (2)
            operations-supported: Validate-Job (4)
            operations-supported: Create-Job (5)
            operations-supported: Send-Document (6)
            operations-supported: Cancel-Job (8)
            operations-supported: Get-Job-Attributes (9)
            operations-supported: Get-Jobs (10)
            operations-supported: Get-Printer-Attributes (11)
            operations-supported: Identify-Printer (60)
        charset-configured (charset): 'utf-8'
            name: charset-configured
            charset value: utf-8
        charset-supported (charset): 'utf-8'
            name: charset-supported
            charset value: utf-8
        color-supported (boolean): true
            name: color-supported
            boolean value: True
        compression-supported (keyword): 'none'
            name: compression-supported
            keyword value: none
        copies-default (integer): 1
            name: copies-default
            integer value: 1
        copies-supported (rangeOfInteger): 1-99
            name: copies-supported
            rangeOfInteger value: 1-99
        document-format-default (mimeMediaType): 'application/octet-stream'
            name: document-format-default
            mimeMediaType value: application/octet-stream
        document-format-supported (1setOf mimeMediaType): 'application/octet-stream','image/urf','image/pwg-raster','image/jpeg','application/pdf'
            name: document-format-supported
            mimeMediaType value: application/octet-stream
            mimeMediaType value: image/urf
            mimeMediaType value: image/pwg-raster
            mimeMediaType value: image/jpeg
            mimeMediaType value: application/pdf
        generated-natural-language-supported (naturalLanguage): 'en-fi'
            name: generated-natural-language-supported
            naturalLanguage value: en-fi
        jpeg-features-supported (keyword): 'none'
            name: jpeg-features-supported
            keyword value: none
        jpeg-k-octets-supported (rangeOfInteger): 0-51200
            name: jpeg-k-octets-supported
            rangeOfInteger value: 0-51200
        jpeg-x-dimension-supported (rangeOfInteger): 0-15000
            name: jpeg-x-dimension-supported
            rangeOfInteger value: 0-15000
        jpeg-y-dimension-supported (rangeOfInteger): 1-15000
            name: jpeg-y-dimension-supported
            rangeOfInteger value: 1-15000
        media-default (keyword): 'iso_a4_210x297mm'
            name: media-default
            keyword value: iso_a4_210x297mm
        media-bottom-margin-supported (integer): 500
            name: media-bottom-margin-supported
            integer value: 500
        media-left-margin-supported (integer): 500
            name: media-left-margin-supported
            integer value: 500
        media-right-margin-supported (integer): 500
            name: media-right-margin-supported
            integer value: 500
        media-top-margin-supported (integer): 500
            name: media-top-margin-supported
            integer value: 500
        multiple-document-jobs-supported (boolean): false
            name: multiple-document-jobs-supported
            boolean value: False
        natural-language-configured (naturalLanguage): 'en-fi'
            name: natural-language-configured
            naturalLanguage value: en-fi
        orientation-requested-default (enum): portrait
            name: orientation-requested-default
            orientation: portrait (3)
        orientation-requested-supported (1setOf enum): portrait,landscape,reverse-landscape,reverse-portrait,none
            name: orientation-requested-supported
            orientation: portrait (3)
            orientation: landscape (4)
            orientation: reverse-landscape (5)
            orientation: reverse-portrait (6)
            orientation: none (7)
        pdl-override-supported (keyword): 'attempted'
            name: pdl-override-supported
            keyword value: attempted
        printer-device-id (textWithoutLanguage): 'MFG:Canon;MDL:MF645C UFR II;CLS:PRINTER;DES:Canon MF645C UFR II;CID:CA_XPS_OIP;CMD:LIPSLX,CPCA;PESP:V1;'
            name: printer-device-id
            textWithoutLanguage value: MFG:Canon;MDL:MF645C UFR II;CLS:PRINTER;DES:Canon MF645C UFR II;CID:CA_XPS_OIP;CMD:LIPSLX,CPCA;PESP:V1;
        printer-icons (1setOf uri): 'http://192.168.20.7:80/en/media/dev_icon_128x128.png','http://192.168.20.7:80/en/media/dev_icon_512x512.png'
            name: printer-icons
            uri value: http://192.168.20.7:80/en/media/dev_icon_128x128.png
            uri value: http://192.168.20.7:80/en/media/dev_icon_512x512.png
        printer-is-accepting-jobs (boolean): true
            name: printer-is-accepting-jobs
            boolean value: True
        print-quality-default (enum): normal
            name: print-quality-default
            print-quality: normal (4)
        print-quality-supported (1setOf enum): draft,normal
            name: print-quality-supported
            print-quality: draft (3)
            print-quality: normal (4)
        printer-resolution-default (resolution): 300x300dpi
            name: printer-resolution-default
            resolution value: 300x300dpi
        printer-resolution-supported (resolution): 300x300dpi
            name: printer-resolution-supported
            resolution value: 300x300dpi
        printer-up-time (integer): 56785
            name: printer-up-time
            integer value: 56785
        printer-uuid (uri): 'urn:uuid:6d4ff0ce-6b11-11d8-8020-f4a997cc5b53'
            name: printer-uuid
            uri value: urn:uuid:6d4ff0ce-6b11-11d8-8020-f4a997cc5b53
        queued-job-count (integer): 0
            name: queued-job-count
            integer value: 0
        urf-supported (1setOf keyword): 'ADOBERGB24','CP255','DM1','PQ4','RS300','SRGB24','W8-16','FN3','IS1-4','OB10-40','V1.4'
            name: urf-supported
            keyword value: ADOBERGB24
            keyword value: CP255
            keyword value: DM1
            keyword value: PQ4
            keyword value: RS300
            keyword value: SRGB24
            keyword value: W8-16
            keyword value: FN3
            keyword value: IS1-4
            keyword value: OB10-40
            keyword value: V1.4
        pdf-versions-supported (keyword): 'iso-32000-1_2008'
            name: pdf-versions-supported
            keyword value: iso-32000-1_2008
        printer-dns-sd-name (nameWithoutLanguage): 'Canon MF645C'
            name: printer-dns-sd-name
            nameWithoutLanguage value: Canon MF645C
        printer-firmware-name (nameWithoutLanguage): 'Main Controller'
            name: printer-firmware-name
            nameWithoutLanguage value: Main Controller
        printer-firmware-string-version (textWithoutLanguage): '13.01'
            name: printer-firmware-string-version
            textWithoutLanguage value: 13.01
        printer-firmware-version (octetString): '1301\000\000\000\000\000\000\000\000\000\000\000\000'
            name: printer-firmware-version
            octetString value: 1301
        media-col-supported (1setOf keyword): 'media-size','media-bottom-margin','media-left-margin','media-right-margin','media-top-margin','media-type','media-source','media-source-properties','media-auto-dimension'
            name: media-col-supported
            keyword value: media-size
            keyword value: media-bottom-margin
            keyword value: media-left-margin
            keyword value: media-right-margin
            keyword value: media-top-margin
            keyword value: media-type
            keyword value: media-source
            keyword value: media-source-properties
            keyword value: media-auto-dimension
            collection {x-dimension,y-dimension}
         [truncated]job-creation-attributes-supported (1setOf keyword): 'copies','finishings','media','orientation-requested','output-bin','print-quality','printer-resolution','sides','media-col','output-mode','print-color-mode','ipp-attribute-fid
            name: job-creation-attributes-supported
            keyword value: copies
            keyword value: finishings
            keyword value: media
            keyword value: orientation-requested
            keyword value: output-bin
            keyword value: print-quality
            keyword value: printer-resolution
            keyword value: sides
            keyword value: media-col
            keyword value: output-mode
            keyword value: print-color-mode
            keyword value: ipp-attribute-fidelity
            keyword value: job-name
            keyword value: multiple-document-handling
            keyword value: page-ranges
         [truncated]media-col-default (collection): {media-size{x-dimension,y-dimension},media-bottom-margin,media-left-margin,media-right-margin,media-top-margin,media-type,media-source,media-source-properties{media-source-feed-direction,media-so
            name: media-col-default
            collection {media-size{x-dimension,y-dimension},media-bottom-margin,media-left-margin,media-right-margin,media-top-margin,media-type,media-source,media-source-properties...}
        print-color-mode-default (keyword): 'auto'
            name: print-color-mode-default
            keyword value: auto
        print-color-mode-supported (1setOf keyword): 'auto','color','monochrome','auto-monochrome'
            name: print-color-mode-supported
            keyword value: auto
            keyword value: color
            keyword value: monochrome
            keyword value: auto-monochrome
        printer-geo-location (uri): 'geo:0.000000,0.000000'
            name: printer-geo-location
            uri value: geo:0.000000,0.000000
        page-ranges-supported (boolean): true
            name: page-ranges-supported
            boolean value: True
        multiple-operation-time-out (integer): 60
            name: multiple-operation-time-out
            integer value: 60
        print-scaling-default (keyword): 'auto'
            name: print-scaling-default
            keyword value: auto
        print-scaling-supported (1setOf keyword): 'auto','auto-fit','fill','fit','none'
            name: print-scaling-supported
            keyword value: auto
            keyword value: auto-fit
            keyword value: fill
            keyword value: fit
            keyword value: none
        print-content-optimize-default (keyword): 'auto'
            name: print-content-optimize-default
            keyword value: auto
        print-content-optimize-supported (keyword): 'auto'
            name: print-content-optimize-supported
            keyword value: auto
        multiple-document-handling-default (keyword): 'separate-documents-collated-copies'
            name: multiple-document-handling-default
            keyword value: separate-documents-collated-copies
        multiple-document-handling-supported (1setOf keyword): 'separate-documents-collated-copies','separate-documents-uncollated-copies'
            name: multiple-document-handling-supported
            keyword value: separate-documents-collated-copies
            keyword value: separate-documents-uncollated-copies
        multiple-operation-time-out-action (keyword): 'abort-job'
            name: multiple-operation-time-out-action
            keyword value: abort-job
        printer-config-change-date-time (dateTime): 2024-08-13T19:32:49.0+0300
            name: printer-config-change-date-time
            dateTime value: 2024-08-13T19:32:49.0+0300
        printer-state-change-date-time (dateTime): 2024-08-14T11:19:14.0+0300
            name: printer-state-change-date-time
            dateTime value: 2024-08-14T11:19:14.0+0300
        printer-state-change-time (integer): 1723623554
            name: printer-state-change-time
            integer value: 1723623554
        document-format-preferred (mimeMediaType): 'application/pdf'
            name: document-format-preferred
            mimeMediaType value: application/pdf
        printer-current-time (dateTime): 2024-08-14T11:19:14.0+0300
            name: printer-current-time
            dateTime value: 2024-08-14T11:19:14.0+0300
        printer-strings-languages-supported (naturalLanguage): 'en'
            name: printer-strings-languages-supported
            naturalLanguage value: en
        printer-strings-uri (no-value)
            out-of-band value: no-value (0x13)
        finishings-default (enum): none
            name: finishings-default
            finishings: none (3)
        finishings-supported (enum): none
            name: finishings-supported
            finishings: none (3)
        identify-actions-default (keyword): 'flash'
            name: identify-actions-default
            keyword value: flash
        identify-actions-supported (1setOf keyword): 'flash','sound'
            name: identify-actions-supported
            keyword value: flash
            keyword value: sound
         [truncated]media-col-ready (collection): {media-size{x-dimension,y-dimension},media-bottom-margin,media-left-margin,media-right-margin,media-top-margin,media-type,media-source,media-source-properties{media-source-feed-direction,media-sour
            name: media-col-ready
            collection {media-size{x-dimension,y-dimension},media-bottom-margin,media-left-margin,media-right-margin,media-top-margin,media-type,media-source,media-source-properties...}
        media-ready (keyword): 'iso_a4_210x297mm'
            name: media-ready
            keyword value: iso_a4_210x297mm
        output-bin-default (keyword): 'face-down'
            name: output-bin-default
            keyword value: face-down
        output-bin-supported (keyword): 'face-down'
            name: output-bin-supported
            keyword value: face-down
        pages-per-minute (integer): 21
            name: pages-per-minute
            integer value: 21
        pages-per-minute-color (integer): 21
            name: pages-per-minute-color
            integer value: 21
         [truncated]printer-input-tray (1setOf octetString): 'type=other;mediafeed=0;mediaxfeed=0;maxcapacity=1;level=0;status=3;name=auto;','type=sheetFeedAutoNonRemovableTray;mediafeed=0;mediaxfeed=0;maxcapacity=1;level=0;status=3;name=Stack Byp
            name: printer-input-tray
            octetString value: type=other;mediafeed=0;mediaxfeed=0;maxcapacity=1;level=0;status=3;name=auto;
            octetString value: type=sheetFeedAutoNonRemovableTray;mediafeed=0;mediaxfeed=0;maxcapacity=1;level=0;status=3;name=Stack Bypass;
            octetString value: type=sheetFeedAutoRemovableTray;mediafeed=29700;mediaxfeed=21000;maxcapacity=150;level=150;status=0;name=Drawer1;
        printer-output-tray (octetString): 'type=unRemovableBin;maxcapacity=100;remaining=-2;status=5;name=Tray1;stackingorder=firstToLast;pagedelivery=faceDown;'
            name: printer-output-tray
            octetString value: type=unRemovableBin;maxcapacity=100;remaining=-2;status=5;name=Tray1;stackingorder=firstToLast;pagedelivery=faceDown;
        printer-supply-info-uri (uri): 'http://192.168.20.7:80/airprint.html'
            name: printer-supply-info-uri
            uri value: http://192.168.20.7:80/airprint.html
        sides-default (keyword): 'one-sided'
            name: sides-default
            keyword value: one-sided
        sides-supported (1setOf keyword): 'one-sided','two-sided-long-edge','two-sided-short-edge'
            name: sides-supported
            keyword value: one-sided
            keyword value: two-sided-long-edge
            keyword value: two-sided-short-edge
        number-up-default (integer): 1
            name: number-up-default
            integer value: 1
        number-up-supported (1setOf integer): 1,2,4,6,8,9,16
            name: number-up-supported
            integer value: 1
            integer value: 2
            integer value: 4
            integer value: 6
            integer value: 8
            integer value: 9
            integer value: 16
        presentation-direction-number-up-default (keyword): 'toright-tobottom'
            name: presentation-direction-number-up-default
            keyword value: toright-tobottom
        presentation-direction-number-up-supported (1setOf keyword): 'toright-tobottom','toleft-tobottom'
            name: presentation-direction-number-up-supported
            keyword value: toright-tobottom
            keyword value: toleft-tobottom
        landscape-orientation-requested-preferred (enum): 4
            name: landscape-orientation-requested-preferred
            enum value: 4
        marker-colors (1setOf nameWithoutLanguage): '#000000','#00FFFF','#FF00FF','#FFFF00'
            name: marker-colors
            nameWithoutLanguage value: #000000
            nameWithoutLanguage value: #00FFFF
            nameWithoutLanguage value: #FF00FF
            nameWithoutLanguage value: #FFFF00
        marker-high-levels (1setOf integer): 100,100,100,100
            name: marker-high-levels
            integer value: 100
            integer value: 100
            integer value: 100
            integer value: 100
        marker-levels (1setOf integer): 78,98,99,96
            name: marker-levels
            integer value: 78
            integer value: 98
            integer value: 99
            integer value: 96
        marker-low-levels (1setOf integer): 7,7,7,7
            name: marker-low-levels
            integer value: 7
            integer value: 7
            integer value: 7
            integer value: 7
        marker-names (1setOf nameWithoutLanguage): 'Canon Cartridge 054 Black Toner','Canon Cartridge 054 Cyan Toner','Canon Cartridge 054 Magenta To','Canon Cartridge 054 Yellow Ton'
            name: marker-names
            nameWithoutLanguage value: Canon Cartridge 054 Black Toner
            nameWithoutLanguage value: Canon Cartridge 054 Cyan Toner
            nameWithoutLanguage value: Canon Cartridge 054 Magenta To
            nameWithoutLanguage value: Canon Cartridge 054 Yellow Ton
        marker-types (1setOf keyword): 'toner','toner','toner','toner'
            name: marker-types
            keyword value: toner
            keyword value: toner
            keyword value: toner
            keyword value: toner
        media-source-supported (1setOf keyword): 'auto','by-pass-tray','tray-1'
            name: media-source-supported
            keyword value: auto
            keyword value: by-pass-tray
            keyword value: tray-1
        media-type-supported (1setOf keyword): 'stationery','stationery-lightweight','stationery-heavyweight','envelope','labels'
            name: media-type-supported
            keyword value: stationery
            keyword value: stationery-lightweight
            keyword value: stationery-heavyweight
            keyword value: envelope
            keyword value: labels
        output-mode-default (keyword): 'auto'
            name: output-mode-default
            keyword value: auto
        output-mode-supported (1setOf keyword): 'auto','monochrome','auto-monochrome','color'
            name: output-mode-supported
            keyword value: auto
            keyword value: monochrome
            keyword value: auto-monochrome
            keyword value: color
        pdf-k-octets-supported (rangeOfInteger): 0-256000
            name: pdf-k-octets-supported
            rangeOfInteger value: 0-256000
        printer-kind (1setOf keyword): 'document','envelope','postcard'
            name: printer-kind
            keyword value: document
            keyword value: envelope
            keyword value: postcard
        finishings-col-database (collection): {finishing-template}
            name: finishings-col-database
            collection {finishing-template}
        finishings-col-default (collection): {finishing-template}
            name: finishings-col-default
            collection {finishing-template}
        finishings-col-ready (collection): {finishing-template}
            name: finishings-col-ready
            collection {finishing-template}
        finishings-col-supported (keyword): 'finishing-template'
            name: finishings-col-supported
            keyword value: finishing-template
        finishings-ready (enum): none
            name: finishings-ready
            finishings: none (3)
        finishing-template-supported (keyword): 'none'
            name: finishing-template-supported
            keyword value: none
        job-pages-per-set-supported (boolean): true
            name: job-pages-per-set-supported
            boolean value: True
        overrides-supported (1setOf keyword): 'media','media-col','document-numbers','pages'
            name: overrides-supported
            keyword value: media
            keyword value: media-col
            keyword value: document-numbers
            keyword value: pages
        pwg-raster-document-sheet-back (keyword): 'normal'
            name: pwg-raster-document-sheet-back
            keyword value: normal
        pwg-raster-document-resolution-supported (resolution): 300x300dpi
            name: pwg-raster-document-resolution-supported
            resolution value: 300x300dpi
        pwg-raster-document-type-supported (1setOf keyword): 'srgb_8','sgray_8','rgb_8'
            name: pwg-raster-document-type-supported
            keyword value: srgb_8
            keyword value: sgray_8
            keyword value: rgb_8
        mopria-certified (textWithoutLanguage): '1.3'
            name: mopria-certified
            textWithoutLanguage value: 1.3
        print_wfds (nameWithoutLanguage): 'T'
            name: print_wfds
            nameWithoutLanguage value: T
    end-of-attributes-tag

ipp-canon.zip

Aug 14 '24 08:08 hannut

Also the printer has the latest firmware from Canon. I have had this printer for several years and working with cups

Aug 14 '24 09:08 hannut

I had bad filter on the original wireshark capture. I did a new one and now I can also see the error canon-part2.zip

This is the one the printer does not like

Frame 39: 188 bytes on wire (1504 bits), 188 bytes captured (1504 bits) on interface enp59s0u1u1u2, id 0
Ethernet II, Src: 52:54:00:99:eb:51 (52:54:00:99:eb:51), Dst: Canon_cc:5b:53 (f4:a9:97:cc:5b:53)
Internet Protocol Version 4, Src: 192.168.20.171, Dst: 192.168.20.7
Transmission Control Protocol, Src Port: 45114, Dst Port: 631, Seq: 229, Ack: 1, Len: 134
[2 Reassembled TCP Segments (362 bytes): #37(228), #39(134)]
Hypertext Transfer Protocol
    POST /ipp/print HTTP/1.1\r\n
    Content-Length: 134\r\n
    Content-Type: application/ipp\r\n
    Date: Wed, 14 Aug 2024 09:04:06 GMT\r\n
    Host: 192.168.20.7:631\r\n
    User-Agent: CUPS/2.4.7 (Linux 6.8.0-40-generic; x86_64) IPP/2.0\r\n
    Expect: 100-continue\r\n
    \r\n
    [Full request URI: http://192.168.20.7:631/ipp/print]
    [HTTP request 1/1]
    [Response in frame: 46]
    File Data: 134 bytes
Internet Printing Protocol
    [Response In: 46]
    version: 2.0
    operation-id: Get-Printer-Attributes (0x000b)
    request-id: 4
    operation-attributes-tag
        attributes-charset (charset): 'utf-8'
            name: attributes-charset
            charset value: utf-8
        attributes-natural-language (naturalLanguage): 'en-us'
            name: attributes-natural-language
            naturalLanguage value: en-us
        printer-uri (uri): ''
            name: printer-uri
            uri value: 
        requested-attributes (keyword): 'media-col-database'
            name: requested-attributes
            keyword value: media-col-database
    end-of-attributes-tag

Aug 14 '24 09:08 hannut

Hmm, the printer-uri is blank on the second request. Investigating...

Aug 15 '24 00:08 michaelrsweet

The wrong URI was being sent in all of the cases:

[master 4bada6c6c] Fix IPP everywhere printer setup (Issue #1033)

[2.4.x 313c388db] Fix IPP everywhere printer setup (Issue #1033)

Aug 15 '24 01:08 michaelrsweet

Hi, compiled this commit as Fedora RPMs. Now I can add the printer but there is still different problem.

There is an error when adding but i get the printer added

lpadmin -p canon -v ipp://192.168.20.7/ipp/print -E -m everywhere
lpadmin: Unable to create PPD: No IPP attributes.

The printer is added as RAW and I'm able to change the driver to the "Generic IPP Everywhere Printer" (drv:///cupsfilters.drv/pwgrast.ppd). This flow works with the "old" versions which I tested earlier.

However printing test page does not work. Printer cancels the job after receiving it.

Log:

elo 15 12:01:34 hannu-xps cupsd[223334]: REQUEST localhost - - "POST /printers/canon HTTP/1.1" 200 352 Create-Job successful-ok
elo 15 12:01:34 hannu-xps cupsd[223334]: REQUEST localhost - - "POST /printers/canon HTTP/1.1" 200 494 Send-Document successful-ok
elo 15 12:01:49 hannu-xps cupsd[223334]: [Job 7] Print job canceled at printer.
elo 15 12:01:49 hannu-xps cupsd[223334]: canon hannu 7 [15/Aug/2024:12:01:49 +0300] total 1 - localhost Testisivu - -
elo 15 12:01:49 hannu-xps cupsd[223334]: [Job 7] Backend ipp returned status 5 (cancel job)

I'm not sure if I test this properly. First I compiled RPMs from latest fedora package and only adding the new patch. Then I downloaded cups from this excact commit (2.4.x branch) and replaced the Fedora provided tgz with it. Compiled and installed both variants. Might the other cups related other default fedora packages cause issues with this?

I can try to capture what happens if it's helpful. During printing the whole test page is sent via network and wireshark gets very slow and unresponsive when capturing so much traffic. thsark command line works fast but reading the captures with wireshark takes veeeeery long time because of the payload of the page

Aug 15 '24 10:08 hannut

@michaelrsweet Should I open a new issue or can we continue with this?

I printed a smaller document and captured that. captures.zip

Same as before. Add printer with lpadmin -p canon -v ipp://192.168.20.7/ipp/print -E -m everywhere, change printer type from RAW to Generic IPP, print

I assume that -e everywhere should do the right thing. However with this printer the manually changing the Generic IPP has been the only way to get it working with older versions of cups.

 ➜  ~ rpm -qa | grep -i -e cups -e ghostscript
python3-cups-2.0.4-1.fc40.x86_64
cups-pk-helper-0.2.7-7.fc40.x86_64
ghostscript-tools-fonts-10.02.1-12.fc40.noarch
ghostscript-tools-printing-10.02.1-12.fc40.noarch
ghostscript-10.02.1-12.fc40.x86_64
libcupsfilters-2.0.0-7.fc40.x86_64
cups-browsed-2.0.0-6.fc40.x86_64
cups-filters-driverless-2.0.0-6.fc40.x86_64
cups-filters-2.0.0-6.fc40.x86_64
bluez-cups-5.77-1.fc40.x86_64
gutenprint-cups-5.3.4-16.fc40.x86_64
cups-libs-313c388dbc023bbcb75d1efed800d0cfc992a6cc-0.fc40.x86_64
cups-client-313c388dbc023bbcb75d1efed800d0cfc992a6cc-0.fc40.x86_64
cups-filesystem-313c388dbc023bbcb75d1efed800d0cfc992a6cc-0.fc40.noarch
cups-313c388dbc023bbcb75d1efed800d0cfc992a6cc-0.fc40.x86_64
cnrdrvcups-ufr2-uk-6.00-1.00.x86_64
cups-ipptool-313c388dbc023bbcb75d1efed800d0cfc992a6cc-0.fc40.x86_64


 ➜  ~ lpadmin -p canon -v ipp://192.168.20.7/ipp/print -E -m everywhere
lpadmin: Unable to create PPD: No IPP attributes.

 ➜  ~ avahi-browse -rt _ipp._tcp
+ wlp0s20f3 IPv4 Canon MF645C                                  _ipp._tcp            local
= wlp0s20f3 IPv4 Canon MF645C                                  _ipp._tcp            local
   hostname = [Canoncc5b53.local]
   address = [192.168.20.7]
   port = [631]
   txt = ["mopria-certified=1.3" "print_wfds=T" "rfo=ipp/faxout" "kind=document,envelope,postcard" "URF=ADOBERGB24,CP255,DM1,PQ4,RS300,SRGB24,W8-16,FN3,IS1-4,OB10-40,V1.4" "Fax=T" "Scan=T" "TLS=1.2" "usb_CMD=LIPSLX,CPCA" "UUID=6d4ff0ce-6b11-11d8-8020-f4a997cc5b53" "PaperMax=legal-A4" "Punch=0" "Staple=F" "Sort=F" "Collate=F" "Bind=F" "PaperCustom=T" "Duplex=T" "Copies=T" "Color=T" "TBCP=F" "Binary=F" "Transparent=F" "usb_MDL=MF645C" "usb_MFG=Canon" "adminurl=http://Canoncc5b53.local:80/airprint.html" "pdl=application/octet-stream,image/urf,image/pwg-raster,image/jpeg,application/pdf" "product=(CNMF645C)" "ty=Canon MF645C" "priority=10" "qtotal=1" "note=" "rp=ipp/print" "txtvers=1"]

elo 16 08:47:26 hannu-xps cupsd[5704]: canon: PPD creation failed: No IPP attributes.
elo 16 08:47:26 hannu-xps cupsd[5704]: [Client 28] Returning IPP server-error-device-error for CUPS-Add-Modify-Printer (ipp://localhost:631/print>
elo 16 08:47:26 hannu-xps cupsd[5704]: REQUEST localhost - hannu "POST /admin/ HTTP/1.1" 200 275 CUPS-Add-Modify-Printer server-error-device-error
elo 16 08:47:59 hannu-xps cupsd[5704]: REQUEST localhost - - "POST / HTTP/1.1" 200 345 Create-Printer-Subscriptions successful-ok
elo 16 08:48:01 hannu-xps cupsd[5704]: REQUEST localhost - - "POST / HTTP/1.1" 200 3979414 CUPS-Get-PPDs -
elo 16 08:48:21 hannu-xps cupsd[5704]: REQUEST localhost - - "POST / HTTP/1.1" 200 3979414 CUPS-Get-PPDs -
elo 16 08:48:33 hannu-xps cupsd[5704]: REQUEST localhost - - "POST /admin/ HTTP/1.1" 401 0 - -
elo 16 08:48:33 hannu-xps cupsd[5704]: CreateProfile failed: org.freedesktop.ColorManager.AlreadyExists:profile id 'canon-Gray..' already exists
elo 16 08:48:33 hannu-xps cupsd[5704]: CreateProfile failed: org.freedesktop.ColorManager.AlreadyExists:profile id 'canon-RGB..' already exists
elo 16 08:48:33 hannu-xps cupsd[5704]: REQUEST localhost - root "POST /admin/ HTTP/1.1" 200 220 CUPS-Add-Modify-Printer successful-ok
elo 16 08:49:33 hannu-xps cupsd[5704]: REQUEST localhost - - "POST /printers/canon HTTP/1.1" 200 212 Create-Job successful-ok
elo 16 08:49:33 hannu-xps cupsd[5704]: REQUEST localhost - - "POST /printers/canon HTTP/1.1" 200 8277 Send-Document successful-ok
elo 16 08:49:34 hannu-xps cupsd[5704]: [Job 13] Print job canceled at printer.
elo 16 08:49:34 hannu-xps cupsd[5704]: canon hannu 13 [16/Aug/2024:08:49:34 +0300] total 1 - localhost Nimetön 1 - -
elo 16 08:49:34 hannu-xps cupsd[5704]: [Job 13] Backend ipp returned status 5 (cancel job)

Aug 16 '24 06:08 hannut

We can continue here…

Aug 16 '24 08:08 michaelrsweet

@hannut another problem is that your printer does not provide "media-col-database" attribute on request (at least wireshark does not show it or ), which is required for IPP Everywhere and AirPrint. This is something which manufacturer has to fix to be AirPrint certified. Please report the issue to Canon - you probably can find some instructions on their webpage.

The reason why it works when you set the driver manually is because the driver contains the generic pregenerated data, which would be generated on the fly if the printer provided all requested data.

@michaelrsweet I was interested how IPP should work if an unsupported attribute is requested from the destination, and found out the attributes which were requested but are not on the destination are ignored and we return successful-ok...

Aug 16 '24 10:08 zdohnal

@zdohnal If the Printer ignores one or more attributes or values but is otherwise successful, it is supposed to return 'successful-ok-ignored-or-substituted-attributes' with the ignored attributes or values in the unsupported attributes group in the response (so you know what was ignored). Some printers return 'successful-ok' without the requested attributes (wrong), some return a 'client-error-bad-request' status code (also wrong), but we try to work around those issues by querying the "media-col-database" attribute separately if we don't get it the first time. This was the original issue (the second request had a blank "printer-uri"), but it looks like that printer just doesn't support "media-col-database" at all and the cupsd code needs to tolerate that because the PPD generator can still work with "media-supported" and default margins.

Sep 16 '24 17:09 michaelrsweet

@hannut

OK, so I'm looking at the capture more closely and am seeing errors in the printer's response - look at the media-col-supported attribute, where in the middle of the list of member attribute names we see a collection value that looks like it is for the media-size-supported attribute? There should be an error before the "PPD creation failed" message for Get-Printer-Attributes.

Sep 16 '24 18:09 michaelrsweet

I can reproduce the printing issue.

Same as before. Add printer with lpadmin -p canon -v ipp://192.168.20.7/ipp/print -E -m everywhere, change printer type from RAW to Generic IPP, print

I assume that -e everywhere should do the right thing. However with this printer the manually changing the Generic IPP has been the only way to get it working with older versions of cups.

After setting the queue as above：

on Debian10.3 (with cups 2.2.10 and cups-filter 1.28.x), cups sends pwg-raster-format document to device, and the printing is OK.
on Ubuntu24.04 (with cups 2.4.7 and cups-filter 2.0), cups sends cups-raster-format document to device, and the device returns error code client-error-document-format-error.

But I don’t know why does cups send cups-raster-format document to the device on Ubuntu24.04.

Sep 18 '24 05:09 tangyanli

@tangyanli is the installed printer on Debian still raw, or does it have a PPD file generated by IPP Everywhere model?

EDIT: scratch that, now I see "After setting as above", so you did the magic by setting existing Generic IPP PPD into existing raw queue, am I correct?

Sep 18 '24 06:09 zdohnal

The printer is added as RAW and I'm able to change the driver to the "Generic IPP Everywhere Printer" (drv:///cupsfilters.drv/pwgrast.ppd).

My reproduce steps on Unbunt24.04:

Add the queue by the command: #lpadmin -p canon -v deivce-uri -E -m everywhere -> Cups sends the pdf document to device and the printing is OK.
On localhost:631, modify the new added queue "canon" and update its model as "Generic IPP Everywhere Printer (en)" -> Cups sends the cups-raster formant document to device and the printing is NG.

Sep 18 '24 07:09 tangyanli

@tangyanli can you provide the PPD files for the printer from Debian and Ubuntu, debug logs from both machines (enable debug logs by cupsctl LogLevel=debug2 and print the job) and network capture when you install the printer and print?

I don't know if you have the same model as @hannut , but his model claims to support image/urf, so raster format should work (Generic IPP Everywhere Printer PPD enforces raster format). If the printer installation does not work with "everywhere" model, the queue stays raw and sending PDF prints ok, then the model supports plain PDF at least.

Sep 18 '24 08:09 zdohnal

I am experiencing this same issue with my Canon MF743C running LinuxMint 22 (based upon Ubuntu 24.04) . I also tested when booting live images of both Fedora Cinnamon 40 and LinuxMint Edge (based upon Debian 12) with the same results.

The printer just stopped working where it had been working fine the day before. If there is info I can provide to help identify the issues, direct me. Would providing the output of the same commands that @hannut provided be helpful?

BTW: I can still access this printer from my Android 14 mobile and from a Windows 11 system. Nothing changed with them so it definitely appears to be limited to CUPS.

Sep 28 '24 20:09 RodBarnes

UPDATE I just did a firmware update and I was successful adding and printing a test page. I also noticed some CUPS updates (I'd been gone a week). So, between the two, it seems to be working now.

Oct 19 '24 00:10 RodBarnes

I have a similar issue with Canon MF460 printer, but it returns invalid naturalLanguage attribute:

$ ipptool -tv ipps://Canonf47eae.local:443/  get-printer-attributes.test 
"/usr/share/cups/ipptool/get-printer-attributes.test":
    Get-Printer-Attributes:
        attributes-charset (charset) = utf-8
        attributes-natural-language (naturalLanguage) = en
        printer-uri (uri) = ipps://Canonf47eae.local:443/
        requested-attributes (1setOf keyword) = all,media-col-database
    Get printer attributes using get-printer-attributes                  [FAIL]
        RECEIVED: 373901 bytes in response
        status-code = client-error-bad-request ("natural-language-configured": Bad naturalLanguage value "en-  " - bad characters (RFC 8011 section 5.1.9).)
        attributes-charset (charset) = utf-8
        attributes-natural-language (naturalLanguage) = en-

Second problem with it – media-col-database attribute value size is greater than 65536 symbols, what is limit in cupsfilters/ipp.c in cups-filters.

Dec 30 '24 16:12 jekhor

@jekhor have you tried the firmware update for fixing the ipptool error?

Jan 02 '25 12:01 zdohnal

Having the same issue with an HP DeskJet 2710. It used to work just fine from Gnome's autodiscovery without even having to add it through CUPS. Now it fails with status successful-ok ((null)):

ipptool -tv ipps://DeskJet2710._ipp._tcp.local get-printer-attributes.test
"/usr/share/cups/ipptool/get-printer-attributes.test":
    Get-Printer-Attributes:
        attributes-charset (charset) = utf-8
        attributes-natural-language (naturalLanguage) = en
        printer-uri (uri) = ipp://HP38CA840B80FC.local:631/ipp/print
        requested-attributes (1setOf keyword) = all,media-col-database
    Get printer attributes using get-printer-attributes                  [FAIL]
        RECEIVED: 0 bytes in response
        status-code = successful-ok ((null))
        IPP request failed with status successful-ok ((null))

Still works fine from under Windows.

Feb 28 '25 01:02 somepaulo

@somepaulo have you tried updating the printer firmware? If you did, please attach network traffic capture between your machine and the printer when you enter the ipptool command. Thank you!

Feb 28 '25 05:02 zdohnal

@zdohnal Here's the gzipped .pcapng file. The 201 IP is my laptop, the 253 IP is the DeskJet 2710. deskjet2710.pcapng.gz

Mar 03 '25 12:03 somepaulo

The packet capture doesn't actually contain any of the actual data, just the TCP headers...

Mar 03 '25 15:03 michaelrsweet

The packet capture doesn't actually contain any of the actual data, just the TCP headers...

I'm new to Wireshark. Is the data missing because of wrong capture configuration or because it's not there to begin with?

Mar 03 '25 16:03 somepaulo

I think you need to go out of your way to remove the data, so either there isn't any or maybe there is a permission or networking issue preventing you from getting the actual traffic.

Are you running Wireshark on the machine that is running ipptool? How is the printer connected to the network? Your computer?

Mar 03 '25 22:03 michaelrsweet

Yes, I'm running it on the same machine, my laptop. The printer is connected over WiFi, same as laptop. Running Arch, up to date. Everything used to work just fine before, but I can't really say when things broke since I rarely use the printer. Last time was around Christmas. No major changes to the system though, just regular updates.

I ran Wireshark GUI with sudo from the terminal because it wouldn't see my wireless interface in regular mode and I didn't have time to set my user up for Wireshark. So I imagine permissions are not the issue here.

Furthermore, today the printer wasn't even getting seen, so I rebooted it, after which the laptop saw it again and I even managed to print out a document from LibreOffice, but then it refused to print anything else from any software, even with further reboots. Jobs hang as 'processing'. Back to where I was yesterday.

Mar 04 '25 02:03 somepaulo

@somepaulo tbh I use wireshark mostly for investigating the capture, I use tcpdump for capturing the traffic, since IMO it is easier to define you want to listen on all interfaces. The other thing which I recall there can be an issue with wireshark not showing IPPS correctly, so it would be better to pass plain IPP URI to ipptool.

So you can do something like this:

$ sudo tcpdump -w cups.pcap -s0 -i any &
$ ipptool -tv ipp://DeskJet2710._ipp._tcp.local get-printer-attributes.test
(get ipptool results)
$ sudo kill `pidof tcpdump`

And one more thing I recall - try plain IP or hostname of the printer in the URI as well to be sure (e.g. ipp://<ip_or_hostname>/ipp/print) - mDNS support in Linux is flaky and additionally I saw some routers messing with printer's mDNS record, botching it for CUPS.

Mar 04 '25 07:03 zdohnal

First, I checked the network:

$ lpinfo -v
file cups-pdf:/
network beh
network http
network lpd
network socket
network https
network ipps
direct hp
network ipp
network smb
network dnssd://DeskJet2710._ipps._tcp.local/?uuid=02a46fab-2cb7-fb8e-926c-969ab5ecb6f9
network ipps://DeskJet2710._ipps._tcp.local/
network socket://192.168.0.253:9100

Then I ran tcpdump as per your suggestions (with IP filter to only get printer related comms):

$ sudo tcpdump -w cups.pcap -s0 -i any host 192.168.0.253 & ipptool -tv ipp://DeskJet2710._ipp._tcp.local get-printer-attributes.test
[3] 78624
tcpdump: WARNING: any: That device doesn't support promiscuous mode
(Promiscuous mode not supported on the "any" device)
tcpdump: listening on any, link-type LINUX_SLL2 (Linux cooked v2), snapshot length 262144 bytes
ipptool: Bad URI "ipp://DeskJet2710._ipp._tcp.local".

$ sudo tcpdump -w cups.pcap -s0 -i any host 192.168.0.253 & ipptool -tv ipp://192.168.0.253/ipp/print get-printer-attributes.test
[4] 93707
"/usr/share/cups/ipptool/get-printer-attributes.test":
    Get-Printer-Attributes:
        attributes-charset (charset) = utf-8
        attributes-natural-language (naturalLanguage) = en
        printer-uri (uri) = ipp://192.168.0.253:631/ipp/print
        requested-attributes (1setOf keyword) = all,media-col-database
    Get printer attributes using get-printer-attributes                  [tcpdump: WARNING: any: That device doesn't support promiscuous mode
(Promiscuous mode not supported on the "any" device)
FAIL]
        RECEIVED: 0 bytes in response
        status-code = server-error-internal-error (No request sent.)
        IPP request failed with status server-error-internal-error (No request sent.)
tcpdump: listening on any, link-type LINUX_SLL2 (Linux cooked v2), snapshot length 262144 bytes

$ sudo tcpdump -w cups.pcap -s0 -i wlp2s0 host 192.168.0.253 & ipptool -tv ipp://192.168.0.253/ipp/print get-printer-attributes.test
[5] 94065
tcpdump: listening on wlp2s0, link-type EN10MB (Ethernet), snapshot length 262144 bytes
"/usr/share/cups/ipptool/get-printer-attributes.test":
    Get-Printer-Attributes:
        attributes-charset (charset) = utf-8
        attributes-natural-language (naturalLanguage) = en
        printer-uri (uri) = ipp://192.168.0.253:631/ipp/print
        requested-attributes (1setOf keyword) = all,media-col-database
    Get printer attributes using get-printer-attributes                  [FAIL]
        RECEIVED: 0 bytes in response
        status-code = server-error-internal-error (No request sent.)
        IPP request failed with status server-error-internal-error (No request sent.)

Here's the dump file:
cups.pcap.gz

Double checked all printer settings through its own web interface. All comms modes are enabled: IPP/IPPS, socket, etc.

Running ipptool yields more now for whatever reason, but only when using the printer's IP address despite what lpinfo -v shows:

$ ipptool -tv ipps://DeskJet2710._ipp._tcp.local get-printer-attributes.test
ipptool: Bad URI "ipps://DeskJet2710._ipp._tcp.local".

$ ipptool -tv ipps://192.168.0.253/ipp/print get-printer-attributes.test
"/usr/share/cups/ipptool/get-printer-attributes.test":
    Get-Printer-Attributes:
        attributes-charset (charset) = utf-8
        attributes-natural-language (naturalLanguage) = en
        printer-uri (uri) = ipps://192.168.0.253:631/ipp/print
        requested-attributes (1setOf keyword) = all,media-col-database
    Get printer attributes using get-printer-attributes                  [PASS]
        RECEIVED: 35078 bytes in response
        status-code = successful-ok (successful-ok)
        attributes-charset (charset) = utf-8
        attributes-natural-language (naturalLanguage) = en
        printer-uri-supported (uri) = ipps://192.168.0.253:631/ipp/print
        uri-security-supported (keyword) = tls
        uri-authentication-supported (keyword) = requesting-user-name
        printer-settable-attributes-supported (keyword) = none
        printer-wifi-ssid (nameWithoutLanguage) = SKYW4AFU
        printer-wifi-state (enum) = 8
        printer-name (nameWithoutLanguage) = HP0B80FC
        printer-location (textWithoutLanguage) = Desk
        printer-more-info (uri) = http://192.168.0.253/#hId-pgAirPrint
        printer-info (textWithoutLanguage) = DeskJet2710
        printer-dns-sd-name (nameWithoutLanguage) = DeskJet2710
        printer-make-and-model (textWithoutLanguage) = HP DeskJet 2700 series
        printer-state (enum) = idle
        printer-state-reasons (keyword) = none
        printer-state-message (textWithoutLanguage) =
        ipp-versions-supported (1setOf keyword) = 1.0,1.1,2.0
        operations-supported (1setOf enum) = Print-Job,Validate-Job,Cancel-Job,Cancel-My-Jobs,Get-Job-Attributes,Get-Jobs,Get-Printer-Attributes,Create-Job,Send-Document,Set-Printer-Attributes,Print-URI,Send-URI,Close-Job,Identify-Printer
        charset-configured (charset) = utf-8
        charset-supported (charset) = utf-8
        natural-language-configured (naturalLanguage) = en
        generated-natural-language-supported (1setOf naturalLanguage) = en,fr,de,es,it,sv,da,no,nl,fi,ja,pt,pl,tr,zh-tw,zh-cn,ru,cs,hu,ko,he,el,ar,bg,hr,ro,sk,sl
        document-format-default (mimeMediaType) = application/octet-stream
        document-format-supported (1setOf mimeMediaType) = application/vnd.hp-PCL,image/jpeg,application/PCLm,image/urf,image/pwg-raster,application/octet-stream
        document-format-version-supported (1setOf textWithoutLanguage) = PCL3GUI,PJL,Automatic,JPEG,PCLM,AppleRaster,PWGRaster
        printer-is-accepting-jobs (boolean) = true
        queued-job-count (integer) = 0
        pdl-override-supported (keyword) = attempted
        printer-up-time (integer) = 83011
        printer-current-time (no-value) = no-value
        compression-supported (1setOf keyword) = none,deflate,gzip
        color-supported (boolean) = true
        job-creation-attributes-supported (1setOf keyword) = copies,finishings,finishings-col,job-pages-per-set,sides,orientation-requested,media,print-quality,printer-resolution,output-bin,media-col,output-mode,print-content-optimize,pclm-source-resolution,print-color-mode,ipp-attribute-fidelity,job-name,page-ranges,multiple-document-handling,job-mandatory-attributes,print-rendering-intent,print-scaling
        reference-uri-schemes-supported (1setOf uriScheme) = http,https
        hp-outputbins-supported (collection) = {name=2 mode=1 page-delivery=1 physical-fold-unit=false}
        printer-device-id (textWithoutLanguage) = MFG:HP;MDL:DeskJet 2700 series;CMD:PCL3GUI,PJL,Automatic,JPEG,PCLM,AppleRaster,PWGRaster,DW-PCL,802.11,DESKJET,DYN;CLS:PRINTER;DES:26K72B;CID:HPDeskjet_P976D;LEDMDIS:USB#FF#CC#00,USB#07#01#02,USB#FF#04#01;SN:CN28GFZ8MP;S:038000C480a00001002c240005ac1400046;Z:05000009000009,12000,17000000000000,181;
        printer-uuid (uri) = urn:uuid:02a46fab-2cb7-fb8e-926c-969ab5ecb6f9
        landscape-orientation-requested-preferred (enum) = 5
        job-constraints-supported (collection) = {resolver-name=fullbleed-sizes media-top-margin=0 media-bottom-margin=0 media-left-margin=0 media-right-margin=0 media=na_executive_7.25x10.5in,na_letter_8.5x11in,na_legal_8.5x14in,na_govt-letter_8x10in,iso_a5_148x210mm,iso_a4_210x297mm,jis_b5_182x257mm,jpn_hagaki_100x148mm,iso_a6_105x148mm,na_index-4x6_4x6in,na_index-5x8_5x8in,na_number-10_4.125x9.5in,iso_dl_110x220mm,iso_c6_114x162mm,jpn_chou3_120x235mm,jpn_chou4_90x205mm,oe_photo-l_3.5x5in,jpn_photo-2l_127x177.8mm,na_5x7_5x7in,iso_b5_176x250mm,om_small-photo_100x150mm}
        job-resolvers-supported (collection) = {resolver-name=fullbleed-sizes media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296}
        ipp-features-supported (1setOf keyword) = airprint-2.1,ipp-everywhere
        which-jobs-supported (1setOf keyword) = completed,not-completed,all
        job-ids-supported (boolean) = true
        requesting-user-uri-supported (boolean) = true
        multiple-operation-time-out-action (keyword) = process-job
        printer-geo-location (unknown) = unknown
        hp-pc-version-major (integer) = 0
        hp-pc-version-minor (integer) = 72
        hp-default-duplex-standard (boolean) = false
        hp-easycolor-default (keyword) = ec-conservative
        hp-print-quality-supported (1setOf collection) = {type=3 imaging-technology=4000 display-string=3000 pq-mode=1 optimal-resolution=300},{type=4 imaging-technology=4005 display-string=3001 pq-mode=2 optimal-resolution=600},{type=5 imaging-technology=4010 display-string=3002 pq-mode=3 optimal-resolution=600}
        mopria-certified (textWithoutLanguage) = 2.0
        preferred-attributes-supported (boolean) = false
        printer-config-change-date-time (no-value) = no-value
        printer-config-change-time (integer) = 0
        printer-state-change-date-time (no-value) = no-value
        printer-state-change-time (integer) = 892
        document-password-supported (integer) = 0
        printer-kind (1setOf keyword) = document,envelope,photo,postcard
        media-supported (1setOf keyword) = na_executive_7.25x10.5in,na_letter_8.5x11in,na_legal_8.5x14in,na_govt-letter_8x10in,iso_a5_148x210mm,iso_a4_210x297mm,jis_b5_182x257mm,jpn_hagaki_100x148mm,iso_a6_105x148mm,na_index-4x6_4x6in,na_index-5x8_5x8in,na_number-10_4.125x9.5in,iso_dl_110x220mm,iso_c6_114x162mm,jpn_chou3_120x235mm,jpn_chou4_90x205mm,oe_photo-l_3.5x5in,jpn_photo-2l_127x177.8mm,na_5x7_5x7in,iso_b5_176x250mm,om_small-photo_100x150mm,custom_min_3.5x5in,custom_max_8.5x14in
        media-default (keyword) = iso_a4_210x297mm
        media-col-supported (1setOf keyword) = media-type,media-size,media-top-margin,media-left-margin,media-right-margin,media-bottom-margin,media-source,media-size-name
        media-col-default (collection) = {media-size={x-dimension=21000 y-dimension=29700} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery}
        media-col-database (1setOf collection) = {media-size={x-dimension=18415 y-dimension=26670} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery},{media-size={x-dimension=18415 y-dimension=26670} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=photographic-glossy},{media-size={x-dimension=18415 y-dimension=26670} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-glossy},{media-size={x-dimension=18415 y-dimension=26670} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-matte},{media-size={x-dimension=21590 y-dimension=27940} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery},{media-size={x-dimension=21590 y-dimension=27940} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=photographic-glossy},{media-size={x-dimension=21590 y-dimension=27940} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-glossy},{media-size={x-dimension=21590 y-dimension=27940} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-matte},{media-size={x-dimension=21590 y-dimension=35560} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery},{media-size={x-dimension=21590 y-dimension=35560} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=photographic-glossy},{media-size={x-dimension=21590 y-dimension=35560} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-glossy},{media-size={x-dimension=21590 y-dimension=35560} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-matte},{media-size={x-dimension=20320 y-dimension=25400} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery},{media-size={x-dimension=20320 y-dimension=25400} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=photographic-glossy},{media-size={x-dimension=20320 y-dimension=25400} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-glossy},{media-size={x-dimension=20320 y-dimension=25400} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-matte},{media-size={x-dimension=14800 y-dimension=21000} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery},{media-size={x-dimension=14800 y-dimension=21000} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=photographic-glossy},{media-size={x-dimension=14800 y-dimension=21000} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-glossy},{media-size={x-dimension=14800 y-dimension=21000} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-matte},{media-size={x-dimension=21000 y-dimension=29700} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery},{media-size={x-dimension=21000 y-dimension=29700} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=photographic-glossy},{media-size={x-dimension=21000 y-dimension=29700} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-glossy},{media-size={x-dimension=21000 y-dimension=29700} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-matte},{media-size={x-dimension=18200 y-dimension=25700} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery},{media-size={x-dimension=18200 y-dimension=25700} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=photographic-glossy},{media-size={x-dimension=18200 y-dimension=25700} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-glossy},{media-size={x-dimension=18200 y-dimension=25700} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-matte},{media-size={x-dimension=10000 y-dimension=14800} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery},{media-size={x-dimension=10000 y-dimension=14800} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=photographic-glossy},{media-size={x-dimension=10000 y-dimension=14800} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-glossy},{media-size={x-dimension=10000 y-dimension=14800} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-matte},{media-size={x-dimension=10500 y-dimension=14800} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery},{media-size={x-dimension=10500 y-dimension=14800} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=photographic-glossy},{media-size={x-dimension=10500 y-dimension=14800} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-glossy},{media-size={x-dimension=10500 y-dimension=14800} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-matte},{media-size={x-dimension=10160 y-dimension=15240} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery},{media-size={x-dimension=10160 y-dimension=15240} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=photographic-glossy},{media-size={x-dimension=10160 y-dimension=15240} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-glossy},{media-size={x-dimension=10160 y-dimension=15240} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-matte},{media-size={x-dimension=12700 y-dimension=20320} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery},{media-size={x-dimension=12700 y-dimension=20320} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=photographic-glossy},{media-size={x-dimension=12700 y-dimension=20320} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-glossy},{media-size={x-dimension=12700 y-dimension=20320} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-matte},{media-size={x-dimension=10477 y-dimension=24130} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery},{media-size={x-dimension=10477 y-dimension=24130} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=photographic-glossy},{media-size={x-dimension=10477 y-dimension=24130} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-glossy},{media-size={x-dimension=10477 y-dimension=24130} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-matte},{media-size={x-dimension=11000 y-dimension=22000} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery},{media-size={x-dimension=11000 y-dimension=22000} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=photographic-glossy},{media-size={x-dimension=11000 y-dimension=22000} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-glossy},{media-size={x-dimension=11000 y-dimension=22000} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-matte},{media-size={x-dimension=11400 y-dimension=16200} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery},{media-size={x-dimension=11400 y-dimension=16200} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=photographic-glossy},{media-size={x-dimension=11400 y-dimension=16200} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-glossy},{media-size={x-dimension=11400 y-dimension=16200} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-matte},{media-size={x-dimension=12000 y-dimension=23500} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery},{media-size={x-dimension=12000 y-dimension=23500} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=photographic-glossy},{media-size={x-dimension=12000 y-dimension=23500} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-glossy},{media-size={x-dimension=12000 y-dimension=23500} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-matte},{media-size={x-dimension=9000 y-dimension=20500} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery},{media-size={x-dimension=9000 y-dimension=20500} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=photographic-glossy},{media-size={x-dimension=9000 y-dimension=20500} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-glossy},{media-size={x-dimension=9000 y-dimension=20500} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-matte},{media-size={x-dimension=8890 y-dimension=12700} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery},{media-size={x-dimension=8890 y-dimension=12700} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=photographic-glossy},{media-size={x-dimension=8890 y-dimension=12700} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-glossy},{media-size={x-dimension=8890 y-dimension=12700} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-matte},{media-size={x-dimension=12700 y-dimension=17780} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery},{media-size={x-dimension=12700 y-dimension=17780} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=photographic-glossy},{media-size={x-dimension=12700 y-dimension=17780} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-glossy},{media-size={x-dimension=12700 y-dimension=17780} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-matte},{media-size={x-dimension=12700 y-dimension=17780} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery},{media-size={x-dimension=12700 y-dimension=17780} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=photographic-glossy},{media-size={x-dimension=12700 y-dimension=17780} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-glossy},{media-size={x-dimension=12700 y-dimension=17780} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-matte},{media-size={x-dimension=17600 y-dimension=25000} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery},{media-size={x-dimension=17600 y-dimension=25000} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=photographic-glossy},{media-size={x-dimension=17600 y-dimension=25000} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-glossy},{media-size={x-dimension=17600 y-dimension=25000} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-matte},{media-size={x-dimension=10000 y-dimension=15000} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery},{media-size={x-dimension=10000 y-dimension=15000} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=photographic-glossy},{media-size={x-dimension=10000 y-dimension=15000} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-glossy},{media-size={x-dimension=10000 y-dimension=15000} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=com.hp-specialty-matte}
        finishings-col-database (no-value) = no-value
        media-left-margin-supported (integer) = 296
        media-right-margin-supported (integer) = 296
        media-top-margin-supported (integer) = 296
        media-bottom-margin-supported (integer) = 1270
        media-source-supported (keyword) = main
        media-type-supported (1setOf keyword) = stationery,photographic-glossy,com.hp-specialty-glossy,com.hp-specialty-matte
        media-size-supported (1setOf collection) = {x-dimension=18415 y-dimension=26670},{x-dimension=21590 y-dimension=27940},{x-dimension=21590 y-dimension=35560},{x-dimension=20320 y-dimension=25400},{x-dimension=14800 y-dimension=21000},{x-dimension=21000 y-dimension=29700},{x-dimension=18200 y-dimension=25700},{x-dimension=10000 y-dimension=14800},{x-dimension=10500 y-dimension=14800},{x-dimension=10160 y-dimension=15240},{x-dimension=12700 y-dimension=20320},{x-dimension=10477 y-dimension=24130},{x-dimension=11000 y-dimension=22000},{x-dimension=11400 y-dimension=16200},{x-dimension=12000 y-dimension=23500},{x-dimension=9000 y-dimension=20500},{x-dimension=8890 y-dimension=12700},{x-dimension=12700 y-dimension=17780},{x-dimension=12700 y-dimension=17780},{x-dimension=17600 y-dimension=25000},{x-dimension=10000 y-dimension=15000},{x-dimension=8890-21590 y-dimension=12700-35560}
        media-ready (keyword) = iso_a4_210x297mm
        media-col-ready (collection) = {media-size={x-dimension=21000 y-dimension=29700} media-top-margin=296 media-bottom-margin=1270 media-left-margin=296 media-right-margin=296 media-source=main media-type=stationery}
        finishings-col-ready (no-value) = no-value
        finishings-col-supported (keyword) = finishing-template
        printer-finisher (octetString) =
        printer-finisher-description (octetString) =
        pages-per-minute (integer) = 7
        pages-per-minute-color (integer) = 5
        jpeg-k-octets-supported (rangeOfInteger) = 0-16384
        jpeg-x-dimension-supported (rangeOfInteger) = 0-16384
        jpeg-y-dimension-supported (rangeOfInteger) = 1-16384
        pdf-versions-supported (keyword) = none
        urf-supported (1setOf keyword) = CP1,MT1-2-8-9-10-11,PQ3-4-5,RS300,SRGB24,OB9,OFU0,W8-16,DEVW8-16,DEVRGB24-48,ADOBERGB24-48,FN3,IS1,V1.5
        marker-names (1setOf nameWithoutLanguage) = tri-color ink,black ink
        marker-colors (1setOf nameWithoutLanguage) = #00FFFF#FF00FF#FFFF00,#000000
        marker-types (1setOf keyword) = ink-cartridge,ink-cartridge
        marker-low-levels (1setOf integer) = 2,2
        marker-high-levels (1setOf integer) = 100,100
        marker-levels (1setOf integer) = 90,70
        printer-supply (1setOf octetString) = type=inkCartridge;maxcapacity=100;level=90;class=supplyThatIsConsumed;unit=percent;colorantname=multi-color;,type=inkCartridge;maxcapacity=100;level=70;class=supplyThatIsConsumed;unit=percent;colorantname=black;
        printer-supply-description (1setOf textWithoutLanguage) = Tri-color Cartridge,Black Cartridge
        printer-firmware-name (nameWithoutLanguage) = TCP1FN2424DR
        printer-firmware-string-version (textWithoutLanguage) = TCP1FN2424DR
        printer-firmware-version (octetString) = TCP1FN2424DR
        printer-input-tray (octetString) = type=sheetFeedAutoNonRemovable;dimunit=micrometers;mediafeed=297000;mediaxfeed=210000;maxcapacity=-2;level=-2;status=0;name=Tray\ 1
        printer-output-tray (octetString) = type=unknown;maxcapacity=-2;remaining=-2;status=5;stackingorder=unknown;pagedelivery=faceUp;name=OutputTray1
        copies-default (integer) = 1
        finishings-default (enum) = none
        finishings-col-default (no-value) = no-value
        orientation-requested-default (enum) = portrait
        print-quality-default (enum) = normal
        printer-resolution-default (resolution) = 300dpi
        sides-default (keyword) = one-sided
        output-bin-default (keyword) = face-up
        output-mode-default (keyword) = auto
        print-color-mode-default (keyword) = auto
        multiple-document-handling-default (keyword) = separate-documents-uncollated-copies
        number-up-default (integer) = 1
        presentation-direction-number-up-default (keyword) = toright-tobottom
        print-rendering-intent-default (keyword) = auto
        print-scaling-default (keyword) = auto
        copies-supported (rangeOfInteger) = 1-99
        finishings-supported (enum) = none
        job-pages-per-set-supported (boolean) = true
        orientation-requested-supported (enum) = portrait
        print-quality-supported (1setOf enum) = draft,normal,high
        printer-resolution-supported (resolution) = 300dpi
        sides-supported (keyword) = one-sided
        output-bin-supported (keyword) = face-up
        output-mode-supported (1setOf keyword) = auto,auto-monochrome,monochrome,color
        print-color-mode-supported (1setOf keyword) = auto,auto-monochrome,monochrome,color,process-monochrome
        page-ranges-supported (boolean) = true
        multiple-document-handling-supported (1setOf keyword) = separate-documents-uncollated-copies,separate-documents-collated-copies
        number-up-supported (integer) = 1
        presentation-direction-number-up-supported (keyword) = toright-tobottom
        print-rendering-intent-supported (1setOf keyword) = auto,perceptual
        print-scaling-supported (1setOf keyword) = auto,auto-fit,fill,fit,none
        printer-icons (1setOf uri) = http://192.168.0.253/webApps/images/printer-small.png,http://192.168.0.253/webApps/images/printer.png,http://192.168.0.253/webApps/images/printer-large.png
        printer-supply-info-uri (uri) = http://192.168.0.253/#hId-pgInkConsumables
        print-content-optimize-default (keyword) = auto
        print-content-optimize-supported (1setOf keyword) = auto,photo,graphics,text,text-and-graphics
        pwg-raster-document-sheet-back (keyword) = rotated
        pwg-raster-document-type-supported (1setOf keyword) = sgray_8,srgb_8,adobe-rgb_8,sgray_16,srgb_16,adobe-rgb_16,rgb_8,rgb_16
        pwg-raster-document-resolution-supported (resolution) = 300dpi
        epcl-version-supported (textWithoutLanguage) = 1.0
        manual-duplex-supported (boolean) = false
        pclm-source-resolution-supported (resolution) = 300dpi
        pclm-source-resolution-default (resolution) = 300dpi
        pclm-strip-height-supported (integer) = 16
        pclm-strip-height-preferred (integer) = 16
        pclm-raster-back-side (keyword) = rotated
        pclm-compression-method-preferred (1setOf keyword) = jpeg,flate,rle
        document-format-varying-attributes (keyword) = copies
        printer-get-attributes-supported (keyword) = document-format
        printer-organization (textWithoutLanguage) =
        printer-organizational-unit (textWithoutLanguage) =
        identify-actions-default (keyword) = flash
        identify-actions-supported (1setOf keyword) = flash,pin
        limit-operations-supported (enum) = 10
        multiple-operation-time-out (integer) = 120
        multiple-document-jobs-supported (boolean) = false
        jpeg-features-supported (keyword) = none

Seeing this, I ran tcpdump again. Here's the second file: HPDJ2710.cups.pcap.gz

All this suggests network configuration issues, but doesn't explain (to me) why it worked before and why it worked only once yesterday after rebooting the printer despite no configuration or system package changes. And it doesn't make it clear either whether this is actually related to the original issue being discussed in this thread. Don't want to be spamming if my issue is unrelated.

For what it's worth, I'm perfectly fine with not having printers autodiscovered and working without any installation. I'm happy to add printers manually through CUPS or Gnome settings as long as they just work. So any further pointers greatly appreciated.

Mar 04 '25 16:03 somepaulo

@somepaulo it looks like your printer sometimes returns "Not found" for IPP Get-Printer-Attributes request, which looks like a printer issue :( - URI looks good and attrs too... Unfortunately the second capture is useless without session keys - all traffic is encrypted, but the output passed the test, so connection to the printer via the URI supports IPP Everywhere, so it can be installed with 'everywhere' model and work.

Is the URI from the one before the last ipptool command really the one from lpinfo -v ? I forgot to mention libcups or avahi encodes ipp/ipps into the mDNS hostname, so you should not get ipps scheme with _ipp service name in the mDNS hostname.

Mar 05 '25 09:03 zdohnal

Thank you for your help and guidance.
I think it's more of an mDNS issue since the printer always prints fine from a Windows machine, but from Arch, when it refuses to print, it doesn't print over socket with a driver either. I'll see if disabling or reconfiguring mDNS will make things better.

Mar 07 '25 04:03 somepaulo

I'm having the same issues with my very new Brother DCP-T426W and cups 2.4.11 in arch 6.13.4-arch1-1

sudo ipptool -tv ipps://192.168.77.45:443/ipp/print  get-printer-attributes.test
"/usr/share/cups/ipptool/get-printer-attributes.test":
    Get-Printer-Attributes:
        attributes-charset (charset) = utf-8
        attributes-natural-language (naturalLanguage) = en
        printer-uri (uri) = ipps://192.168.77.45:443/ipp/print
        requested-attributes (1setOf keyword) = all,media-col-database
    Get printer attributes using get-printer-attributes                  [PASS]
        RECEIVED: 22278 bytes in response
        status-code = successful-ok (successful-ok)
        attributes-charset (charset) = utf-8
        attributes-natural-language (naturalLanguage) = es
        copies-default (integer) = 1
        finishings-default (enum) = none
        media-default (keyword) = iso_a4_210x297mm
        media-col-default (collection) = {media-type=stationery media-size={x-dimension=21000 y-dimension=29700} media-bottom-margin=300 media-left-margin=300 media-right-margin=300 media-top-margin=300 media-source=auto media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}}
        orientation-requested-default (enum) = portrait
        output-bin-default (keyword) = face-up
        print-quality-default (enum) = normal
        printer-resolution-default (resolution) = 600dpi
        sides-default (keyword) = one-sided
        print-color-mode-default (keyword) = color
        print-content-optimize-default (keyword) = auto
        print-scaling-default (keyword) = auto
        copies-supported (rangeOfInteger) = 1-99
        finishings-supported (enum) = none
        media-supported (1setOf keyword) = iso_a4_210x297mm,na_letter_8.5x11in,na_legal_8.5x14in,na_executive_7.25x10.5in,iso_a5_148x210mm,iso_a6_105x148mm,na_number-10_4.125x9.5in,iso_dl_110x220mm,iso_c5_162x229mm,na_monarch_3.875x7.5in,na_foolscap_8.5x13in,na_oficio_8.5x13.4in,om_india-legal_215x345mm,na_index-4x6_4x6in,oe_photo-l_3.5x5in,na_5x7_5x7in,na_index-5x8_5x8in,custom_min_88.9x127mm,custom_max_215.9x355.6mm
        media-col-supported (1setOf keyword) = media-type,media-size,media-top-margin,media-left-margin,media-right-margin,media-bottom-margin,media-source,media-source-properties
        orientation-requested-supported (1setOf enum) = portrait,landscape
        output-bin-supported (keyword) = face-up
        print-quality-supported (1setOf enum) = normal,high,draft
        printer-resolution-supported (resolution) = 600dpi
        sides-supported (keyword) = one-sided
        print-color-mode-supported (1setOf keyword) = auto,color,monochrome,auto-monochrome
        print-content-optimize-supported (keyword) = auto
        print-scaling-supported (1setOf keyword) = auto,auto-fit,fill,fit,none
        generated-natural-language-supported (naturalLanguage) = es
        printer-uri-supported (1setOf uri) = ipp://192.168.77.45/ipp/print,ipps://192.168.77.45:443/ipp/print
        uri-security-supported (1setOf keyword) = none,tls
        uri-authentication-supported (1setOf keyword) = none,none
        printer-name (nameWithoutLanguage) = fowler
        printer-location (textWithoutLanguage) = Peconia
        printer-info (textWithoutLanguage) = Brother DCP-T426W
        printer-make-and-model (textWithLanguage) = Brother DCP-T426W[en]
        printer-state (enum) = idle
        printer-state-reasons (keyword) = none
        ipp-versions-supported (1setOf keyword) = 1.0,1.1,2.0
        operations-supported (1setOf enum) = Print-Job,Validate-Job,Create-Job,Send-Document,Cancel-Job,Get-Job-Attributes,Get-Jobs,Get-Printer-Attributes,Close-Job,Identify-Printer
        multiple-document-jobs-supported (boolean) = false
        multiple-operation-time-out (integer) = 150
        natural-language-configured (naturalLanguage) = es
        charset-configured (charset) = utf-8
        charset-supported (charset) = utf-8
        document-format-supported (1setOf mimeMediaType) = application/octet-stream,image/pwg-raster,application/vnd.brother-hbp
        document-format-default (mimeMediaType) = application/octet-stream
        printer-is-accepting-jobs (boolean) = true
        queued-job-count (integer) = 0
        pdl-override-supported (keyword) = attempted
        printer-up-time (integer) = 104
        compression-supported (1setOf keyword) = none,gzip
        color-supported (boolean) = true
        job-creation-attributes-supported (1setOf keyword) = copies,finishings,ipp-attribute-fidelity,job-name,media,media-col,orientation-requested,output-bin,output-mode,print-quality,printer-resolution,requesting-user-name,sides,print-color-mode
        media-bottom-margin-supported (1setOf integer) = 300,0,1200,1200
        media-left-margin-supported (1setOf integer) = 300,0,300,300
        media-right-margin-supported (1setOf integer) = 300,0,300,300
        media-source-supported (1setOf keyword) = auto,main
        media-top-margin-supported (1setOf integer) = 300,0,1200,1200
        media-type-supported (1setOf keyword) = stationery,photographic-glossy,stationery-inkjet,com.brother-bp71
        media-size-supported (1setOf collection) = {x-dimension=21000 y-dimension=29700},{x-dimension=21590 y-dimension=27940},{x-dimension=21590 y-dimension=35560},{x-dimension=18415 y-dimension=26670},{x-dimension=14800 y-dimension=21000},{x-dimension=10500 y-dimension=14800},{x-dimension=10477 y-dimension=24130},{x-dimension=11000 y-dimension=22000},{x-dimension=16200 y-dimension=22900},{x-dimension=9842 y-dimension=19050},{x-dimension=21590 y-dimension=33020},{x-dimension=21590 y-dimension=34036},{x-dimension=21500 y-dimension=34500},{x-dimension=10160 y-dimension=15240},{x-dimension=8890 y-dimension=12700},{x-dimension=12700 y-dimension=17780},{x-dimension=12700 y-dimension=20320},{x-dimension=8890-21590 y-dimension=12700-35560}
        pages-per-minute (integer) = 28
        pages-per-minute-color (integer) = 11
        printer-alert (octetString) = code=other
        printer-alert-description (textWithoutLanguage) = Listo
        printer-device-id (textWithLanguage) = MFG:Brother;CMD:HBP,PJL;MDL:DCP-T426W;CLS:PRINTER;CID:Brother Generic Jpeg Type2;[en]
        printer-icons (1setOf uri) = https://192.168.77.45/icons/device-icons-128.png,https://192.168.77.45/icons/device-icons-512.png
        printer-more-info (uri) = http://192.168.77.45/
        printer-uuid (uri) = urn:uuid:e3248000-80ce-11db-8000-38d57a9b78d0
        job-impressions-supported (rangeOfInteger) = 1-999
        printer-geo-location (unknown) = unknown
        printer-supply-info-uri (uri) = https://192.168.77.45
        media-ready (keyword) = iso_a4_210x297mm
        media-col-ready (1setOf collection) = {media-type=stationery media-size={x-dimension=21000 y-dimension=29700} media-bottom-margin=300 media-left-margin=300 media-right-margin=300 media-top-margin=300 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-type=stationery media-size={x-dimension=21000 y-dimension=29700} media-bottom-margin=0 media-left-margin=0 media-right-margin=0 media-top-margin=0 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}}
        identify-actions-supported (keyword) = display
        ipp-features-supported (keyword) = none
        printer-input-tray (1setOf octetString) = type=other;mediafeed=296926;mediaxfeed=209973;maxcapacity=150;level=-2;status=0;name=AUTO;index=1;dimunit=micrometers;unit=sheets;medianame=REGULAR;mediaweight=-2;mediatype=stationery;mediacolor=Unknown;,type=sheetFeedAutoNonRemovableTray;mediafeed=296926;mediaxfeed=209973;maxcapacity=150;level=-2;status=0;name=TRAY1;index=2;dimunit=micrometers;unit=sheets;medianame=REGULAR;mediaweight=-2;mediatype=stationery;mediacolor=Unknown;
        printer-output-tray (octetString) = type=unRemovableBin;maxcapacity=50;remaining=-2;status=0;name=face-up;index=1;unit=sheets;stackingorder=lastToFirst;pagedelivery=faceUp;offsetstacking=notPresent;
        document-format-varying-attributes (keyword) = copies
        multiple-operation-time-out-action (keyword) = abort-job
        printer-organization (textWithoutLanguage) = 
        printer-organizational-unit (textWithoutLanguage) = 
        printer-get-attributes-supported (keyword) = document-format
        which-jobs-supported (1setOf keyword) = completed,not_completed
        printer-current-time (dateTime) = 2025-03-08T05:15:43Z
        printer-config-change-time (integer) = 1
        printer-config-change-date-time (dateTime) = 2022-01-01T00:49:40Z
        printer-state-change-time (integer) = 1
        printer-state-change-date-time (dateTime) = 2022-01-01T00:49:40Z
        printer-strings-languages-supported (1setOf naturalLanguage) = en,ja
        printer-strings-uri (uri) = https://192.168.77.45/ipp/strings/dict/en.txt
        printer-mandatory-job-attributes (1setOf keyword) = attributes-charset,attributes-natural-language,printer-uri
        marker-colors (1setOf nameWithLanguage) = #FF00FF[en],#00FFFF[en],#FFFF00[en],#000000[en]
        marker-high-levels (1setOf integer) = 100,100,100,100
        marker-levels (1setOf integer) = -2,-2,-2,-2
        marker-low-levels (1setOf integer) = 1,1,1,1
        marker-names (1setOf nameWithLanguage) = M[en],C[en],Y[en],BK[en]
        marker-types (1setOf keyword) = ink-cartridge,ink-cartridge,ink-cartridge,ink-cartridge
        pdf-versions-supported (keyword) = none
        printer-dns-sd-name (nameWithoutLanguage) = Brother DCP-T426W
        printer-kind (1setOf keyword) = document,envelope,postcard,photo
        job-pages-per-set-supported (boolean) = false
        mopria-certified (textWithoutLanguage) = 2.0
        pwg-raster-document-resolution-supported (1setOf resolution) = 600dpi,300dpi
        pwg-raster-document-sheet-back (keyword) = rotated
        pwg-raster-document-type-supported (1setOf keyword) = sgray_8,srgb_8
        media-col-database (1setOf collection) = {media-type=stationery media-size={x-dimension=21000 y-dimension=29700} media-bottom-margin=300 media-left-margin=300 media-right-margin=300 media-top-margin=300 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-type=stationery-inkjet media-size={x-dimension=21000 y-dimension=29700} media-bottom-margin=300 media-left-margin=300 media-right-margin=300 media-top-margin=300 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-type=photographic-glossy media-size={x-dimension=21000 y-dimension=29700} media-bottom-margin=300 media-left-margin=300 media-right-margin=300 media-top-margin=300 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-type=com.brother-bp71 media-size={x-dimension=21000 y-dimension=29700} media-bottom-margin=300 media-left-margin=300 media-right-margin=300 media-top-margin=300 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-type=stationery media-size={x-dimension=21000 y-dimension=29700} media-bottom-margin=0 media-left-margin=0 media-right-margin=0 media-top-margin=0 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-type=stationery-inkjet media-size={x-dimension=21000 y-dimension=29700} media-bottom-margin=0 media-left-margin=0 media-right-margin=0 media-top-margin=0 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-type=photographic-glossy media-size={x-dimension=21000 y-dimension=29700} media-bottom-margin=0 media-left-margin=0 media-right-margin=0 media-top-margin=0 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-type=com.brother-bp71 media-size={x-dimension=21000 y-dimension=29700} media-bottom-margin=0 media-left-margin=0 media-right-margin=0 media-top-margin=0 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-type=stationery media-size={x-dimension=21590 y-dimension=27940} media-bottom-margin=300 media-left-margin=300 media-right-margin=300 media-top-margin=300 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-type=stationery-inkjet media-size={x-dimension=21590 y-dimension=27940} media-bottom-margin=300 media-left-margin=300 media-right-margin=300 media-top-margin=300 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-type=photographic-glossy media-size={x-dimension=21590 y-dimension=27940} media-bottom-margin=300 media-left-margin=300 media-right-margin=300 media-top-margin=300 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-type=com.brother-bp71 media-size={x-dimension=21590 y-dimension=27940} media-bottom-margin=300 media-left-margin=300 media-right-margin=300 media-top-margin=300 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-type=stationery media-size={x-dimension=21590 y-dimension=27940} media-bottom-margin=0 media-left-margin=0 media-right-margin=0 media-top-margin=0 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-type=stationery-inkjet media-size={x-dimension=21590 y-dimension=27940} media-bottom-margin=0 media-left-margin=0 media-right-margin=0 media-top-margin=0 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-type=photographic-glossy media-size={x-dimension=21590 y-dimension=27940} media-bottom-margin=0 media-left-margin=0 media-right-margin=0 media-top-margin=0 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-type=com.brother-bp71 media-size={x-dimension=21590 y-dimension=27940} media-bottom-margin=0 media-left-margin=0 media-right-margin=0 media-top-margin=0 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-size={x-dimension=18415 y-dimension=26670} media-bottom-margin=300 media-left-margin=300 media-right-margin=300 media-top-margin=300 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-size={x-dimension=21590 y-dimension=35560} media-bottom-margin=300 media-left-margin=300 media-right-margin=300 media-top-margin=300 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-size={x-dimension=14800 y-dimension=21000} media-bottom-margin=300 media-left-margin=300 media-right-margin=300 media-top-margin=300 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-size={x-dimension=10500 y-dimension=14800} media-bottom-margin=300 media-left-margin=300 media-right-margin=300 media-top-margin=300 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-size={x-dimension=10500 y-dimension=14800} media-bottom-margin=0 media-left-margin=0 media-right-margin=0 media-top-margin=0 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-size={x-dimension=10477 y-dimension=24130} media-bottom-margin=1200 media-left-margin=300 media-right-margin=300 media-top-margin=1200 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-size={x-dimension=11000 y-dimension=22000} media-bottom-margin=1200 media-left-margin=300 media-right-margin=300 media-top-margin=1200 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-size={x-dimension=16200 y-dimension=22900} media-bottom-margin=1200 media-left-margin=300 media-right-margin=300 media-top-margin=1200 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=6}},{media-size={x-dimension=9842 y-dimension=19050} media-bottom-margin=1200 media-left-margin=300 media-right-margin=300 media-top-margin=1200 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-size={x-dimension=21590 y-dimension=33020} media-bottom-margin=300 media-left-margin=300 media-right-margin=300 media-top-margin=300 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-size={x-dimension=21590 y-dimension=34036} media-bottom-margin=300 media-left-margin=300 media-right-margin=300 media-top-margin=300 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-size={x-dimension=21500 y-dimension=34500} media-bottom-margin=300 media-left-margin=300 media-right-margin=300 media-top-margin=300 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-size={x-dimension=10160 y-dimension=15240} media-bottom-margin=300 media-left-margin=300 media-right-margin=300 media-top-margin=300 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-size={x-dimension=10160 y-dimension=15240} media-bottom-margin=0 media-left-margin=0 media-right-margin=0 media-top-margin=0 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-size={x-dimension=8890 y-dimension=12700} media-bottom-margin=300 media-left-margin=300 media-right-margin=300 media-top-margin=300 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-size={x-dimension=8890 y-dimension=12700} media-bottom-margin=0 media-left-margin=0 media-right-margin=0 media-top-margin=0 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-size={x-dimension=12700 y-dimension=17780} media-bottom-margin=300 media-left-margin=300 media-right-margin=300 media-top-margin=300 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-size={x-dimension=12700 y-dimension=17780} media-bottom-margin=0 media-left-margin=0 media-right-margin=0 media-top-margin=0 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-size={x-dimension=12700 y-dimension=20320} media-bottom-margin=300 media-left-margin=300 media-right-margin=300 media-top-margin=300 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}},{media-size={x-dimension=12700 y-dimension=20320} media-bottom-margin=0 media-left-margin=0 media-right-margin=0 media-top-margin=0 media-source=main media-source-properties={media-source-feed-direction=short-edge-first media-source-feed-orientation=3}}

The output doesn't seem to have any errors, but :

sudo lpadmin -p DCPT426W -E -v "ipps://192.168.77.45:443/ipp/print" -m everywhere
lpadmin: Unable to create PPD: Printer does not support required IPP attributes or document formats.

( wireshark_lpadmin.pcapng.gz where .45 is the printer and .2 my laptop )

This creates the queue as raw just as @hannut commented. If I change manually the model to Generic > Generic IPP Everywhere Printer (en) then the status of the jobs halt a bit at Connected to printer but after a few seconds it changes to Print job canceled at printer.

Also I already updated the firmware of the printer to the latest version (i.e. 1.27) and I'm not using the avahi + nss-mdns approach since I know the address of the printer, as the Arch docs say:

It is not required to rely on dynamic printer discovery on the network (DNS-SD/mDNS) when the address of the printer is known

EDIT: I'm an idiot, Brother DCP-T426W doesn't support IPP Everywhere. I did however download the proprietary drivers but still can't make it work

sudo lpadmin -p "DCPT426W-IPP" -E -v "ipps://192.168.77.45:443/ipp/print" -m lsb/usr/Brother/brother_dcpt426w_printer_en.ppd  
lpadmin: Printer drivers are deprecated and will stop working in a future version of CUPS.

This creates the queue but none of the jobs I've tried have worked (status are either completed at but nothing happens or pending since indefinitely). Here I'm assuming that some basic functionalities (like Print Test Page) should work over ipp when using the proprietary drivers even if IPP Everywhere is nor supported.

Mar 08 '25 05:03 wjes

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Can't add Canon ipp printer after cups version 2.4.6

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