From owner-freebsd-usb@FreeBSD.ORG  Sun Mar  8 21:46:34 2009
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Date: Sun, 08 Mar 2009 15:43:53 -0600 (MDT)
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To: thompsa@freebsd.org
From: "M. Warner Losh" <imp@bsdimp.com>
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Cc: usb@freebsd.org
Subject: Re: Latest kernel breaks scanner
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In message: <20090308203157.GC30672@citylink.fud.org.nz>
            Andrew Thompson <thompsa@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

it used to print a real product/vendor there...

: Does usbconfig list your devices?

Yes.

Warner