I still experience this problem with a Brother HL-1430 printer. However,
I noticed that the device (usblp0) is assigned to the plugdev group.

The file /etc/udev/rules.d/40-permissions.rules is okay for me (line
37):

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

I tried to reload the udev rules using udevcontrol, but the group didn't change 
to "lp".
Any ideas? This is udev's log:

-------

UDEV  [1171105773.643218] add@/class/usb/lp0
UDEV_LOG=3
ACTION=add
DEVPATH=/class/usb/lp0
SUBSYSTEM=usb
SEQNUM=2413
PHYSDEVPATH=/devices/pci0001:00/0001:00:02.0/0001:01:0b.1/usb2/2-1/2-1:1.0
PHYSDEVBUS=usb
PHYSDEVDRIVER=usblp
MAJOR=180
MINOR=0
UDEVD_EVENT=1
DEVNAME=/dev/usblp0

-------

As reported above,

   [EMAIL PROTECTED]:/etc/udev# chgrp lp /dev/usblp0 
   [EMAIL PROTECTED]:/etc/udev# /etc/init.d/cupsys restart

fixes the problem until next reboot.

-- 
usb printer not detected to add printer
https://launchpad.net/bugs/77464

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