How can I make my scanner permissions permanent?

[Heike C. Zimmerer]

Tommy Trussell <tommy.trussell at gmail.com> writes:

> Heike, if you are running Ubuntu 9.04 "Jaunty," did you upgrade from a
> previous version, or is it a clean install?

It's an upgrade, so I cannot be of any help as to when the scanner group
(dis)appeared.

> I'm wondering if I could create a UDEV rule that identifies the device
> as a scanner (in addition to a printer). Maybe then the "scanner"
> permissions might get created by Ubuntu.

This is possible.  Use 

udevadm info --query=path --attribute-walk --path=/sys/class/usb_device/...

(replace the dots, you can also try other queries) to find an expression
which matches your scanner better than the current global usblib rule.
Then replace the expression around the '==' in the usblib rule by what
you've found.

Heike