Probably your printer suffers the problem shown in the following upstream bug report on cups-filters:
https://github.com/OpenPrinting/cups-filters/issues/22 It is currently worked on this, especially also here https://github.com/OpenPrinting/cups-filters/pull/86 and here https://github.com/apple/cups/issues/5484 Please run the following command: driverless This will output the URI of your printer. Does it do so? Then run the following command: ipptool -tv URI get-printer-attributes.test > ipp-attrs.txt Replace URI by your printer's URI which you obtained with the first command. Please attach the resulting ipp-attrs.txt file to this bug. Thanks. ** Bug watch added: github.com/OpenPrinting/cups-filters/issues #22 https://github.com/OpenPrinting/cups-filters/issues/22 ** Bug watch added: github.com/apple/cups/issues #5484 https://github.com/apple/cups/issues/5484 ** Changed in: system-config-printer (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to system-config-printer in Ubuntu. https://bugs.launchpad.net/bugs/1815307 Title: ipp printer isn't shown automatically - adding it errors with a CUPS internal error Status in system-config-printer package in Ubuntu: Incomplete Bug description: System: Ubuntu 18.04 system-config-printer version: 1.5.11-1ubuntu printer: Canon iP7250 I expect to be able to see the printer in the panel just as 'lpstat -l -e' or 'driverless' can see them, without the need to especially add a new printer. And if I do need to add it (don't see why that should be the case, but still), I expect that choosing the printer's name under network would result in adding the printer. What happened instead: Canon iP7250 isn't shown in the Printers panel, clicking on add and expanding the network options - it is shown, but when trying to add it (either driverless IPP, LPD via DNS-SD or IPP via DNS-SD) it gives an error about CUPS internal error. `$ lpstat -l -e` gives `Canon_iP7200_series network none ipp://Canon%20iP7200%20series._ipp._tcp.local/` So the system does see it, and `lp -d Canon_iP7200_series /etc/nsswitch.conf` does print (and for a minute the printer is shown in the Printers panel - but then disappears). I can add it by *not* clicking on the printer's name under Network, but rather, click on ipp printer and manually choose Canon -> iP7200 -> CUPS+Gutenprint driver (and not the recommended driverless option - which, if I choose results in that same cryptic error I get when trying to add the printer by clicking on it, as described above). To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/system-config-printer/+bug/1815307/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
