I reverted the "/etc/udev/rules.d/40-permissions.rules" file back to:
# Printers and Parallel devices SUBSYSTEM=="printer", GROUP="lp" SUBSYSTEM=="ppdev", GROUP="lp" SUBSYSTEM=="usb", KERNEL=="lp[0-9]*", GROUP="lp" Afterwards, I was not able to print a test page and received the same error as before in the CUPS web configuration tool: "Unable to open device file "/dev/lp0": Permission denied" I then ran the command above: [EMAIL PROTECTED]:~$ sudo aa-complain cupsd [sudo] password for jschindler: Setting /etc/apparmor.d/usr.sbin.cupsd to complain mode. In complain mode, I'm still unable to print a test page. [EMAIL PROTECTED]:~$ cat /var/log/syslog | grep "audit" Jun 3 08:10:49 centime kernel: [ 29.995251] audit: initializing netlink socket (disabled) Jun 3 08:10:49 centime kernel: [ 29.995267] audit(1212498624.236:1): initialized Jun 3 08:10:52 centime kernel: [ 57.754790] audit(1212498652.982:2): type=1502 operation="inode_permission" requested_mask="a::" denied_mask="a::" name="/dev/tty" pid=5127 profile="/usr/sbin/cupsd" namespace="default" If you need additional information from me, please let me know. -- Unable to print to parallel port https://bugs.launchpad.net/bugs/235670 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