Interesting, denials can result in strange behaviors/bugs/crashes but I am going to atm just focus on fixing the apparmor confinement. Which rule addition did you try?
If you haven't tried it yet, does using /usr/local/lexmark/** Ux, instead of /usr/local/lexmark/08zero/bin/printdriver rix, result in a different behavior? Also can you provide some timestamps, and md5sums of the cache file? do the following after reboot, and then again after the apparmor_parser command ls -l /etc/apparmor.d/cache/usr.sbin.cupsd md5sum /etc/apparmor.d/cache/usr.sbin.cupsd -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1187970 Title: apparmor prevents custom printer driver from executing To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/1187970/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs