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4.1 KiB
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<!-- received="Mon May 12 13:39:11 1997 MST" -->
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<!-- sent="Mon, 12 May 1997 22:13:35 +0200 (MEST)" -->
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<!-- name="Stefan Luettringhaus-Kappel" -->
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<!-- email="stefan@uran.informatik.uni-bonn.de" -->
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<!-- subject="Mustek Scanner distorted image lines" -->
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<!-- id="199705121458.HAA05340@panda.mosberger" -->
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<!-- inreplyto="" -->
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<title>sane-devel: Mustek Scanner distorted image lines</title>
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<h1>Mustek Scanner distorted image lines</h1>
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<b>Stefan Luettringhaus-Kappel</b> (<a href="mailto:stefan@uran.informatik.uni-bonn.de"><i>stefan@uran.informatik.uni-bonn.de</i></a>)<br>
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<i>Mon, 12 May 1997 22:13:35 +0200 (MEST)</i>
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<p>
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<ul>
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<li> <b>Messages sorted by:</b> <a href="date.html#141">[ date ]</a><a href="index.html#141">[ thread ]</a><a href="subject.html#141">[ subject ]</a><a href="author.html#141">[ author ]</a>
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<li> <b>Next message:</b> <a href="0142.html">Thomas Blume: "Mustek - Speed - Buffer"</a>
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<li> <b>Previous message:</b> <a href="0140.html">David Mosberger-Tang: "small preview fix"</a>
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</ul>
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<!-- body="start" -->
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Hi,<br>
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<p>
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last time I wrote to this list it was my fault not to read the fine<br>
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manual about SCSI settings. Now I tried to do it all right:<br>
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<p>
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- Kernel 2.0.28<br>
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- ncr53c8xx.{c,h} revision 1.18f (taken from linux-2.1.36)<br>
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- no disconnect<br>
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- no tagged command queuing<br>
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- 128k SCSI buffer<br>
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- sane-0.57<br>
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<p>
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The scanner is a MFS-12000SP which says<br>
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Host: scsi1 Channel: 00 Id: 06 Lun: 00<br>
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Vendor: SCANNER Model: Rev: 1.00<br>
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Type: Scanner ANSI SCSI revision: 01 CCS<br>
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<p>
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The scanner is the only device connected to an Asus SC-200.<br>
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(The disks etc. use the NCR on the mainboard).<br>
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<p>
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Now if I do a<br>
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scanimage -d mustek:/dev/scanner --mode Color -x95mm -y200mm --resolution<br>
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300<br>
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I get an image of size 7939717 with header<br>
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<p>
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P6<br>
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# SANE data follows<br>
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1120 2363<br>
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=2E..<br>
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<p>
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The problem is that about every 128kBytes in the image 1 or two scan<br>
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lines of garbage seem to be added (I think sometimes lines are<br>
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missing, too). I could send excerpts from the image if it helps. The<br>
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--backtrack option doesn't change anythink, in fact the scanner always<br>
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backtracks (as I can tell from the movement of the light shining<br>
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through).<br>
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<p>
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The distorted lines also appear in modes other than Color. I'm pretty<br>
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sure (90%) that I had a similar distortion when I once had the scanner<br>
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connected to the NCR53C400 card.<br>
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<p>
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Needless to say, it works ok with windows :-(<br>
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<p>
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So, what else can I do?<br>
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<p>
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Best regards<br>
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<p>
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Stefan<br>
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<p>
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--=20<br>
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Dr. Stefan L=FCttringhaus-Kappel <><><><><><><><><><><><><><><><><><><><><=<br>
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<i>></i><br>
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Institut f=FCr Informatik III Phone +49 (228) 73-4536<br>
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Universit=E4t Bonn Fax +49 (228) 73-4382<br>
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R=F6merstrasse 164 <a href="mailto:stefan@uran.informatik.uni-bonn.de">stefan@uran.informatik.uni-bonn.de</a><br>
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D-53117 Bonn (Germany) <a href="http://www.informatik.uni-bonn.de/~stefan/">http://www.informatik.uni-bonn.de/~stefan/</a><br>
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<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><br>
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<p>
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<pre>
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--
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Source code, list archive, and docs: <a href="http://www.azstarnet.com/~axplinux/sane/">http://www.azstarnet.com/~axplinux/sane/</a>
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To unsubscribe: mail -s unsubscribe <a href="mailto:sane-devel-request@listserv.azstarnet.com">sane-devel-request@listserv.azstarnet.com</a>
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</pre>
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<!-- body="end" -->
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<p>
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<ul>
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<!-- next="start" -->
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<li> <b>Next message:</b> <a href="0142.html">Thomas Blume: "Mustek - Speed - Buffer"</a>
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<li> <b>Previous message:</b> <a href="0140.html">David Mosberger-Tang: "small preview fix"</a>
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<!-- nextthread="start" -->
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<!-- reply="end" -->
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</ul>
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