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Old 10-21-2009, 01:25 PM   #1
Registered: Apr 2006
Location: Sweden
Distribution: Slackware64 14.1 multilib
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Where to set permissions to getting an USB scanner work for an ordinary user?

The scanner group seems to be of no use in this case, the lp group on the other hand hit the spot as far as I can see.

When I run these commands as root:
found USB scanner (vendor=0x03f0 [Hewlett-Packard], product=0x2911 [PSC 2200 Series]) at libusb:001:004
scanimage -L:
device `hpaio:/usb/PSC_2200_Series?serial=MY27RD14D60G' is a Hewlett-Packard PSC_2200_Series all-in-one
As an ordinary user I get nothing from sane-find-scanner.
Scanning works perfectly as root.
Tried to add the user to the scanner group, to no avail.

Any tips where I should change permissions to make scanning as an ordinary user to work? I have an /dev/usb/lp0 entry, but changing the group of that to users (with r/w) does not help.

Last edited by Olaus; 10-23-2009 at 06:24 AM. Reason: Solved
Old 10-21-2009, 01:45 PM   #2
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You usually just need to add your user to the proper group. Some distros use group "usb", some use "scanner", and I'm sure others use something else.

What is the output of cat /etc/group
Old 10-22-2009, 11:05 AM   #3
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After you have added yourself to the scanner group, you need to log out and then back in for this change to be recognised.

/dev/usb/lp0 would usually be a USB printr, but I am not used to slack.



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