A similar report got also to CUPS upstream: https://github.com/apple/cups/issues/5512
and it seems that there is either a firmware bug in the AirPrint- supporting Canon printers or some problem with the client-side IPP implementation (which is in libcups, part of CUPS). Michael Sweet, author of CUPS, will get a Canon printer on the coming Wednesday for further investigation. Moving this bug to CUPS, system-config-printer has nothing to do with it. ** Bug watch added: github.com/apple/cups/issues #5512 https://github.com/apple/cups/issues/5512 ** Package changed: system-config-printer (Ubuntu) => cups (Ubuntu) ** Changed in: cups (Ubuntu) Importance: Undecided => Medium ** Changed in: cups (Ubuntu) Status: New => Triaged -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1815307 Title: ipp printer isn't shown automatically - adding it errors with a CUPS internal error To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1815307/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
