zdohnal

The crash is fixed by the PR, but we have to investigate why GNUTLS returns error next.

@michaelrsweet hmm, I thought printer instances could be part of CUPS Web UI since root writes into /etc/cups/lpoptions and Web UI handles server options... I recalled printer instances because one...

AFAIK cups-lpd is rarely used (I have not seen it used in older environments, only cupsd and lpd backend for a destination) and going to be removed in 3.0, so...

@compata - would you mind providing debug logs from older CUPS when duplex worked, and ipptool.attr file from the command mentioned in the link https://docs.fedoraproject.org/en-US/quick-docs/cups-debug-printing-issues/#_cups_everywhere_model ? Thank you in advance!

@compata you've said in the previous ticket downgrading CUPS to packages with version 2.4.7 and reinstalling the printer fixed the issue, or did I misunderstand? If the downgrade fixed the...

Ok, so from get-printer-attributes request I can see the PPD keyword is generated correctly: ``` ATTR keyword urf-supported "V1.4","CP1","PQ4-5","RS600","SRGB24","W8","OB9","OFU0","DM3","IS1" -> *cupsUrfSupported: "V1.4,CP1,PQ4-5,RS600,SRGB24,W8,OB9,OFU0,DM3,IS1" ``` however there is a difference in options...

@compata looks like the "good" logs don't contain any duplex related options: ``` [Job 233] argv[5]="finishings=3 number-up=1 print-color-mode=color job-uuid=urn:uuid:4337e566-7f3a-39b3-61c6-6e0de9e552b7 job-originating-host-name=localhost date-time-at-creation= date-time-at-processing= time-at-creation=1722924636 time-at-processing=1722924636 document-name-supplied=testpage2.pdf ColorModel=RGB cupsPrintQuality=Normal" ``` There is...

@compata can you try installing these testing rpms (libcupsfilters should suffice) - https://koji.fedoraproject.org/koji/taskinfo?taskID=121847527 and trying to print duplex again? It implements setting print-content-optimize which is usually created by driverless PPD...

Unfortunately no response since August, closing it for now.

@michaelrsweet any way I can help? It affects any discovered printer in CUPS Web UI (dnssd, socket, driverless, usb backends). For others - workarounds are to use temporary queues (if...