Ubuntu
udev package

[feisty] USB printers not detected - user "cupsys" not in group "plugdev"

Bug #82187 reported by Mikael Nilsson on 2007-01-29

This bug report is a duplicate of: Bug #76077: Permissions on /dev/usblp* don't agree with cupsys. Edit Remove

Affects		Status	Importance	Assigned to	Milestone
	udev (Ubuntu)	Confirmed	High	Unassigned

Bug Description

Binary package hint: cupsys

As discussed here:

http://www.cups.org/newsgroups.php?gcups.bugs+v:5147

my USB printer is not detected, as user "lp" (the user cups runs under) is not in group "plugdev".

A simple "sudo adduser lp plugdev" and restart of cups fixes the issue.

EDIT: Seems that the "lp" user should not be used in cupsd.conf, that is another bug in another package. But even with the "cupsys" user, the bug persists. Thus, doing "sudo adduser cupsys plugdev" should work.

See original description

Revision history for this message

Mikael Nilsson (mini) wrote on 2007-01-30:

Hmm, tracing this to my cupsd.conf, having

User lp

should be User=cupsys, I think...

I don't remember ever having changed that...

Revision history for this message

Mikael Nilsson (mini) wrote on 2007-01-30:

The correct link to the message is

http://www.cups.org/newsgroups.php?gcups.bugs+v:5147

Revision history for this message

Patrice Vetsel (vetsel-patrice) wrote on 2007-02-01:

Same problem here.

Changed in cupsys:
status:	Unconfirmed → Confirmed
importance:	Undecided → Medium

Patrice Vetsel (vetsel-patrice) on 2007-02-01

description:

updated

Revision history for this message

Patrice Vetsel (vetsel-patrice) wrote on 2007-02-02:

Pitti is investigating the problem. Seems to be somewhere in the udev rules

Revision history for this message

Patrice Vetsel (vetsel-patrice) wrote on 2007-02-03:

temporary workaround is to do :
sudo addgroup cupsys plugdev
sudo /etc/init.d/cupsys restart

Mikael Nilsson (mini) on 2007-02-08

description:

updated

Patrice Vetsel (vetsel-patrice) on 2007-02-10

Changed in udev:
importance:	Medium → High

Revision history for this message

queny (queny) wrote on 2007-02-11:

Just confirming I experienced the same issue with a canon i865 and MP600, and above temp workaround is indeed successful.

By the way, as I was searching for an answer in other places I saw references to a dev/usb folder-if it matters I have no such folder, just usbdevX.X epXX files in the dev folder. I'm an absolute newbie to linux and frankly have no idea of the likely relevance.