Subject: Re: USB to HP 6200c scanner
To: Jeremy C. Reed <>
From: Sverre Froyen <>
List: current-users
Date: 01/09/2003 16:03:44
On Thursday 09 January 2003 15:40, Jeremy C. Reed wrote:
> > On Tuesday 31 December 2002 19:15, wrote:
> > > I'm trying to connect an HP 6200c scanner to my laptop. The laptop is
> > > running current.  When I plug in the USB cable I get a uhci_timeout and
> > > the port is disabled.
> Sverre,
> Did you ever get any assistance or find any solutions to this problem?

I did not.
> > I have tried adding "repeat until success" at various places in the code,
> > but the result is a timeout in some other part of the code.
> I also had similar problem and did same thing (and added extra logging to
> show that multiple tries appeared to be needed).
> I also need USB help!
> Where should we ask?

Well, we tried here :-)

I was thinking the next step would be to record and analyze the activity on 
the USB bus.  Not sure what kind of equipment is needed for that, though.

My problem may very well be a scanner issue.  The HP 6200c scanner has a bad 
reputation and it may be that it needs some type of "dummy" packet before it 
will respond properly to the next "real" command.  I would be interesting to 
compare a packet trace from Windows with NetBSD.