[CentOS] scanner only works in su mode

[Michael Hennebry]

On Thu, 26 Sep 2013, Robert Heller wrote:

> OK, this is what you need to do:
>
> Create a file named /lib/udev/rules.d/90-local.rules containing this line:
>
> SUBSYSTEMS=="usb", ATTRS{idVendor}=="03f0", ATTRS{idProduct}=="5611", GROUP="scanner", MODE="0660"
>
>
> (This means: on the USB subsystem, for a device with vendor id 03f0 (HP), and
> product id 5611 (Photosmart C3180), change its group to 'scanner', and its
> mode to 0660.)
>
> then execute this command (probably not needed, but can't hurt):
>
> udevadm control --reload-rules
>
> make sure there is a group named 'scanner' and that you are a member of it
> (yes, you have to logout/login again to get the group update).
>
> unplug and re plug in the device. The device file fill now be in group scanner
> with group rw permission and anyone in the scanner group can run hp-scan and
> access the scanner (note it probably won't be /dev/bus/usb/001/006, but
> something else (/dev/bus/usb/001/007 probably and /dev/bus/usb/001/006 will vanish).

That did the trick.
I used lp instead of scanner because I'd already made myself a member of lp.
Thanks.

> I don't know if this will bork things if you plan to use this thing as a
> printer under CentOS (I am not sure what user the CUPS daemon runs as).  If
> necessary, you might need to tweek the rules file to be compatible with CUPS
> or add the UID used by the CUPS daemon to 'scanner'.

Printing works fine.
The only issue I've noticed is that if I leave paper in the all-in-one,
it wants to copy, not just scan.
I'm not sure whether that is a change.
It's been an OS ago since I wanted to scan.

-- 
Michael   hennebry at web.cs.ndsu.NoDak.edu
"On Monday, I'm gonna have to tell my kindergarten class,
whom I teach not to run with scissors,
that my fiance ran me through with a broadsword."  --  Lily