[sane-devel] Problem in detecting usb scanner

Nick Andrew nick at nick-andrew.net
Mon Aug 4 04:30:20 UTC 2008

On Sun, Aug 03, 2008 at 09:05:41PM +0200, Giuseppe Sacco wrote:
>  why /proc/bus/usb/003/002 is not owned by scanner group?

Because udev only populates /dev, and the udev rules say to make the
group "scanner" for a scanner device. /proc is populated by the

>  finally, why lsusb does not list the scanner?
> giuseppe at sgi:~$ sudo lsusb
> Password:
> Bus 003 Device 001: ID 1d6b:0001  
> Bus 002 Device 001: ID 1d6b:0001  
> Bus 001 Device 001: ID 1d6b:0001  

This might be the source of your problem. Old kernel? Somebody else
mentioned firmware. Mine shows:

# lsusb
Bus 002 Device 009: ID 04b8:0110 Seiko Epson Corp. Perfection 1650


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