Comment 38 for bug 420015

Same here. My printer was working fine before I upgraded to karmic, then stopped working after the distribution update.

First, the printer was not seen by CUPS. Solved it by:
 - blacklisting usblp kernel module
 - changing group of /dev/bus/usb/00x/00y device
 - not letting apparmor supervise cupsd operation
as adviced here.

So I was able to add my printer into cups. But printing a test page does not work. The print job shows up in print queue, but never ends. In the list of processes I see :

lp 9520 0.0 0.0 48596 1832 ? S 17:07 0:00 usb://EPSON/Stylus%20DX7000F?serial=B05P108062510410&interface=1 638 root motd 1 finishings=3 media=iso_a4_210x297mm number-up=1 job-uuid=urn:uuid:1f86a76d-d133-3cf5-5dbf-77e34bd688bd job-originating-host-name=localhost

It does not matter whether in 2.6.28 or 2.6.31 kernel.

I hope that helps.