[sane-devel] Unable to access minor data

Oliver Schwartz Oliver.Schwartz@gmx.de
Thu, 4 Jul 2002 22:23:44 +0200


> However when I tried "scanimage -d acer:/dev/usb/scanner0"  or
> "scanimage -d snapscan:/dev/usb/scanner0"  I got the following:
> scanimage: open of device snapscan:/dev/usb/scanner0 failed: Invalid
> argument
> What may I try to work with this scanner?

Please read the instructions for USB scanners on 
http://snapscan.sourceforge.net. You'll have to add a firmware entry to 

If your system doesn't load the scanner module automatically you may have to 
load it manually using "modprobe scanner" (as root). 

Also check the file permissions on /dev/usb/scanner0 if you want to use the 
scanner as a normal user. Use "chmod o+w /dev/usb/scanner0" to allow 
unrestricted access to all users.

If it still doesn't work please send me the debug log as described in 
Henning's mail.