Discussion:
agreeing to issue / fix in libsane-xerox_mfp by Dietmar Frohboese, January 2014 with SCX 3400 (3200 was typo)
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Rudolf Woerndle
2017-12-08 20:53:00 UTC
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Hi!

I agree with the cited patch in so far that disabling the (both) calls to sanei_usb_clear_halt() allows me to use my SCX _3400_
scanner at all - while I cannot report any downside (except ADF, see bottom).

Minimal reproduction step is to delete (comment out) both calls in sanei_usb_clear_halt(). In fact only a few libs seem to use
this function call - is it's usage required/recommended at all?

uname -a
Linux daisy 4.14.3-1-ARCH #1 SMP PREEMPT Thu Nov 30 18:33:13 UTC 2017 x86_64 GNU/Linux

pacman -Qo /usr/lib/sane/libsane-xerox_mfp.so
/usr/lib/sane/libsane-xerox_mfp.so ist in sane 1.0.27-1 enthalten

This device has already worked with arch before (including the ADF, but I lost this ability earlier). Now I'm confused to see
there were no major changes to this library meanwhile, so possibly my issue might be higher level sane or kernel related. (?)

Best Regards
Rudolf
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