[lug] usb question

Maxwell Spangler maxlists at maxwellspangler.com
Mon Jul 26 14:50:21 MDT 2010


On Mon, 2010-07-26 at 14:32 -0600, Davide Del Vento wrote:
> My /proc/bus/usb is empty, despite having this scanner (somehow
> working with a different program, see my previous message), an usb
> mouse, a PS2 (!) keyboard and a usb drive. Everything but the scanner
> is working fine (for the record - this is a laptop on a docking
> station, but I get the same result when undocked). The directory is
> empy even if I reboot the machine with the stuff attached and on (I
> was thinking of BIOS issue, with the reboot).
> 
> So I'm wondering if sane needs a different usb "setup"
> (/proc/bus/usb/) than the one my laptop is using.

I think not having /proc/bus/usb is a valuable clue that your
distribution or your individual system has a problem.

An application level function like sane might rely on those or related
resources to function properly.  So it might be the case that
sane-find-scanner works more directly to hardware and finds your scanner
but the scan-image command goes through normal resources which aren't
appearing correctly.

What distribution is this?

Tried booting on another distribution's boot cd and try some of the same
tricks?  A Fedora13 LiveCD is a pretty comfortable environment..

ps, my /prob/bus/usb has directories for each of 7 usb devices and a
file called 'devices' that has human-readable usb device content.  This
is Fedora 12.

-- 
Maxwell Spangler
========================================================================
        Linux, Unix and Database Administration
        Currently: Boulder, Colorado
        LinkedIn: http://www.linkedin.com/in/maxwellspangler

        




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