[sane-devel] Upgrading to 1.0.7 - snapscan E20 not detected by scanimage

Oliver Schwartz Oliver.Schwartz@gmx.de
Mon, 28 Jan 2002 19:54:46 +0100


> It could be a good thing to uncomment the USB entry in
> the default configration file, right ?
> This would be a good thing for empty heads ...

True, but unfortunately this causes a lot of problems for people that don't 
have a snapscan scanner. The snapscan backend identifies the scanner by 
sending an "inquiry" command to the USB scanner. While this is common for 
SCSI scanners it's not that common for USB scanners, and some USB scanners 
(from vendors other than Agfa or Acer) are reported to crash / freeze when 
receiving an inquiry command.

So, to be on the safe side, the user has to change the configuration file 
manually (assuming that he knows what he's doing) to access the USB scanner.