Samsung SCX 4200 stop working with libsane 1.022-1 in testing

["Pedro A. Tonelli" <pedro.tonelli@gmail.com>]

My scanner suddenly stop working, I think the problem was a upgrade in libsane

The command sane-find-scanner do find the scanner:
"found USB scanner (vendor=0x04e8 [Samsung], product=0x341b [SCX-4200 Series]) at libusb:001:005"

But scanimage -L dont find the device:

"No scanners were identified. If you were expecting something different,
check that the scanner is plugged in, turned on and detected by the
sane-find-scanner tool (if appropriate). Please read the documentation
which came with this software (README, FAQ, manpages)."

Actually the backend for the SCX4200 used to be xerox_mfp. I see the configurations files xerox_mfp.conf and dll.conf
seems to be ok. The backend for the v4L works. Am I missing something?
Two or three weeks ago I've used it with no problems.  I use the testing distribution.

--
-- Pedro Aladar Tonelli --