OpenPrinting
CUPS refuses to show a printer after I modified it
Describe the bug I have several printers attached to my file/print server. I modified the default settings on one recently and it now fails to show up in print dialogues on my workstation.
To Reproduce Steps to reproduce the behaviour:
- go to the printer administration page on the CUPS web interface.
- select a printer
- set the default options
- try to print to it
- the printer no longer shows up in the print dialogue
Expected behaviour The printer visibility should not be affected by whether it has been modified or not. However, I suspect this is just the trigger.
Screenshots If applicable, add screenshots to help explain your problem.
System Information:
- Debian/Trixie on the server, Debian/Forky on the workstation.
- any
- CUPS version 2.4.10 on the server, 2.4.14 on the workstation
Additional context For a couple of years I was not able to see any printers on the server. This changed about a year ago and I was able to print to them. However, after upgrading to Debian/Forky on my workstation, I had to change the paper type on a printer. After I did that, it stopped showing up. I can still see and print to other printers that I haven't had to change the default options.
Please attach your log (/var/log/cups/error_log*) and configuration (/etc/cups/.conf, /etc/cups/ppd/) files so we can see what is going on.
OK. Found part of the problem. The printer had stopped being marked as shared. I don't know how that came about as all I did was change the default options. I didn't modify the printer (I am loath to do that once the setup works - the different available drivers sometimes produce different results).
However, print jobs I send to it from my workstation show they have completed but don't actually print. I can still print directly on the server using lp.
This is a bit like another problem I was having where I couldn't use LP to print from a laptop to a locally installed printer. That issue was related to browsed creating duplicate queues for the same printer..
The problem seems to be that browsed has created its own queue after I turned the printer sharing back on. The queue on the server is CP1215 but browsed calls it HP_Color_LaserJet_CP1215_servername. I deleted the printer on my workstation (localhost:631) CUPS web interface then tried printing to it again. The printer shows up with the same queue again but a different description and now seems to be working.