The logs in /var/log/cups are group owned by the group lp (or lpadmin). However cups runs as root:root. This is why it needs the dac_override capability to be able to access the log files (beside being allowed to access the log files).
-- REJECTING access to capability 'dac_override' (cupsd(6348) profile /usr/sbin/cupsd active /usr/sbin/cupsd) https://bugs.launchpad.net/bugs/131952 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