Ubuntu
udev package

  1. Bug #76077
  2. Comment #2

Comment 2 for bug 76077

Revision history for this message
Steven Walter (stevenrwalter) wrote :

I just ran into this problem as well. My USB printer wouldn't work, I noticed "permission denied" in the logs.

I found something interesting in /etc/udev/rules.d/40-permissions.rules. Line 12 reads:

    SUBSYSTEMS=="usb", GROUP="plugdev"

Obviously, this puts all USB devices in the plugdev group. Further down on line 37, though ,we see:

    SUBSYSTEM=="usb", KERNEL=="lp[0-9]*", GROUP="lp"

The intention, obviously, is that USB printers be given the group lp instead. However, this is not happening. Is there some sort of incorrect assumption in the rules about the way they interact, or is udev improperly applying the rules?