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<div class="moz-cite-prefix">Le 29/07/2012 08:22, Aleksandr Dezhin a
écrit :<br>
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<blockquote cite="mid:5014D6A4.1070906@dezhin.net" type="cite">
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<div class="moz-cite-prefix">On 07/28/2012 12:46 PM, Stef wrote:<br>
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<blockquote cite="mid:5013A6D4.6010406@free.fr" type="cite">
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<div class="moz-cite-prefix">On 27/07/2012 23:25, Aleksandr
Dezhin wrote:<br>
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<blockquote cite="mid:50130759.6050309@dezhin.net" type="cite">
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Dear developers,<br>
<br>
<span id="result_box" class="" lang="en"><span class="hps">I
am trying to</span> <span class="hps">develop</span> <span
class="hps">another web</span><span class="">-based
interface for</span> <span class="hps">sane. </span></span><span
id="result_box" class="" lang="en"><span class="hps">Faced
with</span> <span class="hps">a</span> <span class="hps">problem,
and</span> <span class="hps">do not know</span> <span
class="hps">how to avoid</span> <span class="hps">it or</span>
<span class="hps">solve it.<br>
<br>
</span></span><span id="result_box" class="" lang="en"><span
class="hps alt-edited">I have </span><span class="hps">Canon
LiDE</span> <span class="hps">210</span> <span
class="hps">scanner</span><span class="">, it</span> <span
class="hps">works fine</span> <span class="hps">with
genesys</span> <span class="hps">backend</span><span>.
Locally scanimage works in all modes: color, gray, lineart</span></span>.
<span id="result_box" class="" lang="en"><span class="hps">However,</span>
<span class="hps">if I</span> <span class="hps">scan
through</span> <span class="hps">the network using</span>
<span class="hps">net backend,</span> <span class="hps
alt-edited">it stops</span> <span class="hps alt-edited">work
in</span> <span class="hps">lineart</span> <span
class="hps">mode.<br>
<br>
</span></span>
<div id="gt-res-content" class="almost_half_cell">
<div dir="ltr" style="zoom:1">
<div id="tts_button" style="" class=""><object
type="application/x-shockwave-flash"
data="http://www.gstatic.com/translate/sound_player2.swf"
id="tts" height="18" width="18"></object></div>
<span id="result_box" class="short_text" lang="en"><span
class="hps">Scanimage</span> freezes<span>,</span> <span
class="hps">until</span> <span class="hps">I</span> <span
class="hps">kill</span> <span class="hps">the
process. I attached stderr of scanimage --mode Lineart
with SANE_DEBUG_NET=9. Process freezes after "[net]
sane_read: reading packet length", "scanimage:
received signal 15" appears after killall scanimage.<br>
<br>
</span></span><span id="result_box" class="" lang="en"><span
class="hps">Unfortunately</span> <span class="hps
alt-edited">I can not check</span> <span class="hps">whose</span>
<span class="hps">problem</span> <span class="hps">it
is</span><span class="">: genesys</span> <span
class="hps">or</span> <span class="hps">net backends.</span>
<span class="hps">Test backend</span> <span class="hps">does
not support</span> <span class="hps">lineart</span> <span
class="hps">mode.</span></span><br>
<br>
<span id="result_box" class="" lang="en"><span class="hps">Has
anyone</span> <span class="hps">encountered</span> <span
class="hps">a similar problem</span><span class="">?</span>
<span class="hps alt-edited">How can I</span> <span
class="hps">try</span> <span class="hps alt-edited">solve
it</span><span class="">?</span></span><br>
<br>
Thanks.<br>
</div>
</div>
</blockquote>
Hello,<br>
<br>
what would be handy to solve this issue, would be to run
saned with SANE_DEBUG_GENESYS environment varaible set to 255,
and get the debug messages. This way, I'll have the scan
parameters given to the genesys backend in order to test this
here.<br>
You may try to play with 'emulated lineart' option.<br>
And last, what is your SANE version ? It doesn't show up in
the log file.<br>
<br>
Regards,<br>
Stef<br>
</blockquote>
SANE version is 1.0.22, device connected to 32-bit OS Thinstation
5.1 (sane build from sources), client where I strart scanimage -
64-bit Ubuntu 12.04. <span id="result_box" class="" lang="en"><span
class="hps">Results</span> <span class="hps">SANE_DEBUG_GENESYS</span>
<span class="hps">I'll send</span> <span class="hps">- as soon
as</span> <span class="hps">I get to</span> <span
class="hps">the device.</span> <span class="hps">By the way</span><span
class="">, is there a</span> <span class="hps">simple way to</span>
<span class="hps">capture</span> <span class="hps">stderr,</span>
<span class="hps">if</span> <span class="hps">saned</span> <span
class="hps alt-edited">used together</span> <span class="hps">with</span>
<span class="hps">xinetd? </span></span><span id="result_box"
class="" lang="en"><span class="hps">Today</span> <span
class="hps">I tried</span> <span class="hps">the same (but
both 64-bit Ubuntu) thing</span> <span class="hps">with a
another</span> <span class="hps">scanner</span> <span
class="hps">(HPLIP backend) - lineart</span> <span
class="hps">mode works</span><span>.</span></span> </blockquote>
<br>
Hello,<br>
<br>
I expect saned is exposing a bug in the genesys backend for the
settings you use, surely some issue with the amount of bytes to
send. I remember fixing such a bug for lide100/200 after 1.0.22
release, but this may be another one. Test with emulated lineart
disabled.<br>
Using a wrapper script (redirecting stderr to file) could be
enough, and telling xinetd to use it instead of the current program.<br>
<br>
Regards,<br>
Stef<br>
<br>
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