scanimage -L doesn't work as normal user

[cpghost]

On Fri, Jul 29, 2005 at 09:18:07PM +0200, Erik N??rgaard wrote:
> Following the instruction I run as root:
> # sane-find-scanner -q
> found USB scanner (vendor=0x04b8 [EPSON], product=0x0121 [EPSON
> Scanner]) at libusb:/dev/usb0:/dev/ugen0
> # scanimage -L
> device `snapscan:libusb:/dev/usb0:/dev/ugen0' is a EPSON EPSON
> Scanner flatbed scanner
> 
> And I have even succesfully scanned the warranty in pnm.
> 
> Then as ordinary user:
> $ sane-find-scanner -q
> found USB scanner (vendor=0x04b8 [EPSON], product=0x0121 [EPSON
> Scanner]) at libusb:/dev/usb0:/dev/ugen0
> $ scanimage -L
> 
> No scanners were identified. If you were expecting something
> different, check that the scanner is plugged in, turned on and
> detected by the sane-find-scanner tool (if appropriate). Please
> read the documentation which came with this software (README, FAQ,
> manpages).

This is normally a problem with permissions. You could set them
to 0666 in /etc/devfs.conf, and [re]start devfs with
# /etc/rc.d/devfs start

Then try using scanimage again as ordinary user.

> $ scanimage -d libusb:/dev/usb0:/dev/ugen0
> scanimage: open of device libusb:/dev/usb0:/dev/ugen0 failed:
> Invalid argument

Cheers,
-cpghost.

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