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Description of problem:
Scanning does not work correctly. With Fujitsu ScanSnap S1500 it results in I/O error, with Fujitsu ScanSnap S510 scanning work - but takes a lot of time.

Version-Release number of selected component (if applicable):
sane-backends-1.0.21-3.el6

How reproducible:
Always

Steps to Reproduce:
1. Run scanimage (or also scanadf) with A4, duplex, 300 or 600dpi, color
2.
3.
  
Actual results:
The scan takes a long time to finish, like more than 2 minutes for one paper, or fails completely with I/O error.

Expected results:
The scan should finish successfully and take something like 15 seconds.

Additional info:
There is a bug in the sane-backends-1.0.21 in the fujitsu backend which makes it fail on certain supported devices - not all. The but didn't exist in 1.0.20 and is fixed in current GIT. As a work around the "-B" switch can be used which makes things work. More info can be found here http://lists.alioth.debian.org/pipermail/sane-devel/2011-February/028159.html

This request was evaluated by Red Hat Product Management for
inclusion in the current release of Red Hat Enterprise Linux.
Because the affected component is not scheduled to be updated
in the current release, Red Hat is unfortunately unable to
address this request at this time. Red Hat invites you to
ask your support representative to propose this request, if
appropriate and relevant, in the next release of Red Hat
Enterprise Linux. If you would like it considered as an
exception in the current release, please ask your support
representative.

Simon, sorry for dropping the ball on this.

Is this the fix you are referring to?

  --> http://anonscm.debian.org/gitweb/?p=sane/sane-backends.git;a=commitdiff;h=239a2f7c22d52fd774034e370181ffea1f32e86f

I've just built a scratch release which contains a partial backport of this and an earlier commit (which led to it). You can download it from here:

http://people.redhat.com/nphilipp/.private/rhbz676245/

Please check if this fixes your problem. Thanks!

Hi Nils, currently I don't have access to any of the scanners in question :(
May try later if possible. I don't remember exactly but it looks like the correct patch to me.