Gerry Tool wrote:
I have been trying to get my Epson 1240U scanner (which works in
everything prior to FC2Tx) to work, following bugzilla report
121511. It is not clear exactly what needs to be done that seems to
work for some others. Could someone post a complete step-by-step
process to this list that details how to get usb scanners to work in
Having a working scanner is a requirement for me to use FC2 when it
From the "Scanner Access Now Easy" website.
With Linux 2.4.* you could either use the kernel scanner module or
libusb to access USB scanners. In Linux 2.6.4 the kernel scanner
module was removed.
Therefore with this and later kernels libusb must be used.
While SANE automatically uses libusb when the library and its header
file were present during the build of sane-backends, setting
permissions will require *some attention.*
The device files used by libusb are located in /proc/bus/usb/
(e.g. /proc/bus/usb/001/003). The exact file name can be found out by
running sane-find-scanner which would print "libusb:001:003" in this
case. While setting permissions with e.g. "chmod a+rw
/proc/bus/usb/001/003" seems to work, this change is not permanent.
The permissions will be reset when the scanner is replugged or Linux
One solution to set permissions on-the-fly are the Linux hot-plug
tools that should come with any current distribution. SANE itsself
comes with a hotplug script and related documentaion in the
tools/hotplug/ directory. Please refer to the README in that directory
for the details.
Basically, permissions are not setup correctly with libusb. You need
to set the permission of whatever device position that
sane-find-scanner states. This has to run as root. The file
permissions will not recognize the scanner as a normal user.
Then you have to do what was stated above. I just tried to open my
scanner without changing the file permissions and it did not work. I
then ran the below command as root.
chmod a+rw /proc/bus/usb/001/004
(001 is for the hub. 004 is the port on the hub, for my scanner. This
gives the scanner file permissions rw for owner, group and others)
ls -la /proc/bus/usb/001/004
-rw-rw-rw- 1 root root 57 May 3 18:13 /proc/bus/usb/001/004
I then tried the scanner as a regular user. It worked after running
There is a new version that I just notified in the bug report
mentioned above. Maybe the changes made will make scanner access easy
Hope this is clearer.