[sane-devel] ScanImage -L fails as user

[Per Dalgas Jakobsen]

scanimage -L fails as user (succeeds as root).

As user:
$ SANE_DEBUG_EPJITSU=255 scanimage -L
...
[epjitsu] attach_one: start 'libusb:001:003'
[epjitsu] connect_fd: start
[epjitsu] connect_fd: opening USB device
[epjitsu] connect_fd: could not open device: 11
[epjitsu] connect_fd: finish
[epjitsu] destroy: start
...

As root:
# SANE_DEBUG_EPJITSU=255 scanimage -L
...
[epjitsu] attach_one: start 'libusb:001:003'
[epjitsu] connect_fd: start
[epjitsu] connect_fd: opening USB device
[epjitsu] connect_fd: finish
[epjitsu] init_fw: start
...

User is member of scanner group.
File permission of /dev/bus/usb/001/003 (scanner device) is "crw-rw-r-T" 
with owner "root:root".

What should I check more?

The scanner is a Fujitsu S1100 using the epjitsu backend 1.0.23 with a 
patch.
Debian Wheezy.

~Per