[Pkg-cups-devel] Bug#408843: cups upgrade breaks printing

[Philipp Jocham]

Hi, I have exact the same problem (Epson Stylus RX520) and an
upgrade to the latest cups gives error message "Printer not connected;
will retry in 30 seconds..."


It turned out to be a premission problem with /dev/usb/lp0.

I've set up a udev rule to install the device belonging to group scanner
with permission 0664.

$ ls -al /dev/usb/lp0
crw-rw-r-- 1 root scanner 180, 0 2007-03-05 20:32 /dev/usb/lp0

After a

$ chmod 0666 /dev/usb/lp0

printing was no problem anymore.

It seems that cups drops its root priviliges earlier in new versions.

I'm not sure whats the correct way to fix this.
  1) add lp to group scanner
  2) remove group scanner, replace with lp
  3) chown lp /dev/usb/lp0

Regards, Philipp