Following up for those interested in what the resolve was.. Turns out udev was doing this in /lib/udev/rules.d/70-acl.rules. Disabling the ACL_MANAGE variable for the CDROM device section is what was needed to avoid this behavior. I added my own rule in /etc/udev/rules.d which disables it for good:
SUBSYSTEM=="block", ENV{ID_CDROM}=="1", ENV{ACL_MANAGE}="0" -- cdrom device permissions escalated after gdm login https://bugs.launchpad.net/bugs/667338 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs