Red Hat Bugzilla – Bug 139203
scanimage does not see libusb scanner for non-root user
Last modified: 2007-11-30 17:10:54 EST
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Description of problem:
sane-find-scanner shows: found USB scanner (vendor=0x04b8 [EPSON],
product=0x0110 [EPSON Scanner]) at libusb:001:003 for both root and
scanimage -L shows: device `epson:libusb:001:003' is a Epson GT-8200
flatbed scanner for root but: No scanners were identified. for
scanimage -d epson:libusb:001:003>image produces image for root user
but scanimage: open of device epson:libusb:001:003 failed: Invalid
for non-root user.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Log in as non-root user
2. Attach and power-on Epson USB scanner
3. Run scanimage -L
Actual Results: No scanners were identified
Expected Results: device `epson:libusb:001:003' is a Epson GT-8200
I'm having the same problem with HP PSC 2175 scanner.
Scanner ownership and permissions are defined in
/etc/udev/permissions.d/50-udev.permissions. Ownership should belong
to console user. A work around, since I don't know how to fix
ownership, is to set permissions for usb/scanner* to 0666.
What about when you switch off, and then on, the scanner?
No switch on scanner, but disconnecting and reconnecting either power
or usb cable make the scanner accessable to a non-root user.
My earlier observation about permissions was probably a
misinterpretation of steps that I took to get the scanner working.
On one of many tests the scanner was accessable without having to
disconnect and reconnect it.
*** This bug has been marked as a duplicate of 121511 ***