Latest kernel breaks scanner

[Andrew Thompson]

On Mon, Mar 09, 2009 at 07:39:31AM -0600, M. Warner Losh wrote:
> In message: <200903091404.34912.hselasky at c2i.net>
>             Hans Petter Selasky <hselasky at c2i.net> writes:
> : On Monday 09 March 2009, M. Warner Losh wrote:
> : > In message: <200903091233.55089.hselasky at c2i.net>
> : >
> : >             Hans Petter Selasky <hselasky at c2i.net> writes:
> : > : On Sunday 08 March 2009, Andrew Thompson wrote:
> : > : > On Sun, Mar 08, 2009 at 03:43:53PM -0600, M. Warner Losh wrote:
> : > : > > In message: <20090308203157.GC30672 at citylink.fud.org.nz>
> : > : > >
> : > : > >             Andrew Thompson <thompsa at FreeBSD.org> writes:
> : > : > > : On Sun, Mar 08, 2009 at 01:06:59PM -0600, M. Warner Losh wrote:
> : > : > > : > Sigh.  Had a working system from Mar 4th.  Upgraded now it
> : > : > > : > doesn't work.  Scanner not found by xsane.
> : > : > > :
> : > : > > : Are you sure its not this?
> : > : > > :
> : > : > > : 20090227:
> : > : > > :    The /dev handling for the new USB stack has changed, a
> : > : > > :    buildworld/installworld is required for libusb20.
> : > : > >
> : > : > > Yes.  Been there, done that.  Also have the libmap.conf changes in
> : > : > > place for old binaries that had worked for months before that.  xsane
> : > : > > used to just work in this setup, but now fails.  Looks like some kind
> : > : > > of mismatch in the ABI:
> : > : > >
> : > : > > found USB scanner (UNKNOWN vendor and product) at device
> : > : > > /dev/uscanner0
> : > : >
> : > : > Not sure what would have caused that. Before you spend too much time on
> : > : > this you may want to note that the integration patches for libusb into
> : > : > the ports build will likely be committed tomorrow. This will bump the

          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

> : > : > port numbers so the affected ports rebuild, hopefully sane with DTRT
> : > : > after that.
> : > :
> : > : Maybe you need to chown or rm /dev/uscanner0 to enforce use of libusb
> : > : backend?
> : >
> : > never had to do that before...
> : 
> : Or recompile all of the sane backends. Probably an IOCTL on the uscanner0 is 
> : broken, and the fallback to libusb backend will maybe solve your problem 
> : temporarily if you rm /dev/uscanner0 .
> 
> Can't do it.  devel/libusb is broken.  Been there tried that: Didn't
> work.
> 
> I do know that it has *NEVER* found the device when I don't have
> uscanner loaded, even when ugen was loaded...
> 
> : Actually that is another question:
> : 
> : Should we remove ID's from uscanner.c which will work fine attaching through 
> : the libusb backend ?
> 
> Unlikely, given my experience that it appears to be required...
> 
> Anyway, it is going to be at least a week before I can do anything on
> this again because the scanner is at home right now, and I'm in the
> airport waiting for my flight to AsiaBSDCon 2009...

This is about to be fixed, see above. Hopefully everything is good on
your return :)


Andrew