I found a solution: Do sudo aa-complain cupsd to deactivate the AppArmor protection of CUPS temprarily, then you should be able to print again. (from bug #131470) https://bugs.launchpad.net/ubuntu/+source/cupsys/+bug/131470
-- [Gutsy Tribe4] Can not found Canon printers https://bugs.launchpad.net/bugs/131521 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
