I think I found the culprit: I was modifying an AppArmor profile for Thunderbird. When I executed aa-logprof, I got the following message:
Enforce-mode changes: Profile: /usr/sbin/cupsd Capability: block_suspend Severity: unexpected capability rank input: CAP_BLOCK_SUSPEND If you select "Allow", you will run into the problem mentioned above. I've no idea why creating/modifying a Thunderbird profile affects the cupsd profile and why that capability is added. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1052098 Title: AppArmor parser error for /etc/apparmor.d/usr.sbin.cupsd To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1052098/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs