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<TITLE>sane-devel: Re: please advise: Mustek 12000SP, NCR810 & col</TITLE>
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<META NAME="Author" CONTENT="Henning Meier-Geinitz (hmg-ml@gmx.de)">
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<META NAME="Subject" CONTENT="Re: please advise: Mustek 12000SP, NCR810 & color stripes">
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<H1>Re: please advise: Mustek 12000SP, NCR810 & color stripes</H1>
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<!-- received="Sun, 21 Jan 2001 12:25:59 +0100" -->
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<STRONG>From:</STRONG> Henning Meier-Geinitz (<A HREF="mailto:hmg-ml@gmx.de?Subject=Re:%20please%20advise:%20Mustek%2012000SP,%20NCR810%20&%20color%20stripes&In-Reply-To=<20010121122559.A7719@vortex.swb.de>"><EM>hmg-ml@gmx.de</EM></A>)<BR>
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<STRONG>Date:</STRONG> Sun Jan 21 2001 - 03:25:59 PST
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<P>
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<LI><STRONG>Next message:</STRONG> <A HREF="0220.html">Remco Meeder: "setting default scanner"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0218.html">Jeffrey H. Ingber: "xscanimage crashes when using >1 V4L device"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0217.html">FJA van Zijp: "please advise: Mustek 12000SP, NCR810 & color stripes"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0228.html">FJA van Zijp: "Re: please advise: Mustek 12000SP, NCR810 & color stripes"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0228.html">FJA van Zijp: "Re: please advise: Mustek 12000SP, NCR810 & color stripes"</A>
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<HR NOSHADE><P>
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<P>
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Hi,
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<BR>
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<P>On Sun, Jan 21, 2001 at 09:37:34AM +0100, FJA van Zijp wrote:
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<BR>
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<EM>> Yikes. I think I got a severe case of coloredstriperitis.
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</EM><BR>
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<P>:-)
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<BR>
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<P><EM>> Scanned color images show horizontal lines, one pixel high. The
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</EM><BR>
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<EM>> colors of these lines are clearly off. They seem to lack one or two of
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</EM><BR>
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<EM>> the RGB components.
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</EM><BR>
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<P>From your image it looks like they occur at the border between two
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<BR>
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scan buffers (64k). You may check this by setting option buffersize to
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<BR>
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something other than 128 (the standard size, its twice as much as
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<BR>
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actually sent from the scanner). If the lines occur more towards the
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<BR>
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bottom of the image with bigger buffers, it's probably a problem
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<BR>
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related to sending/receiving these buffers not fast enough.
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<BR>
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<P><EM>> I'm not sure if these are the horizontal stripes that are mentioned in
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</EM><BR>
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<EM>> the SANE literature,
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</EM><BR>
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<P>It's one possibility for stripes. It doesn't look like a line distance
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<BR>
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problem, however.
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<BR>
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<P><EM>> because I only saw one example on the Mustek
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</EM><BR>
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<P><EM>> I have a Mustek ScanExpress 12000SP (says the cover) with
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</EM><BR>
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<EM>> firmware 2.02 (says SANE).
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</EM><BR>
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<P>Same here.
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<BR>
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<P><EM>> The scanner is tied to a nameless
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</EM><BR>
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<EM>> NCR810 SCSI card, no other SCSI devices are involved.
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</EM><BR>
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<P>I have also some sort of NCR810 Clone but at the moment I'm using an
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<BR>
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Adaptec 2940. I will try the 810 later. I'm using the following option
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<BR>
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in modules.conf:
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<BR>
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<P>options ncr53c8xx ncr53c8xx="disc:n"
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<BR>
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<P>But I don't think it will change anything.
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<BR>
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<P><EM>> Slackware 7.1, kernel 2.2.17 drives the linux box, ncr53c7,8xx.o
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</EM><BR>
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<EM>> drives the card. SANE 1.0.4 with Mustek backend 1.0.4 compiles
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</EM><BR>
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<EM>> flawlessly - BTW I only compile the backends mustek and v4l to save
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</EM><BR>
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<EM>> time.
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</EM><BR>
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<P>Here it's 2.2.18. I can't reproduce the stripes but will try later
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<BR>
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with the other card.
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<BR>
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<P>The debug log doesn't look unusual. Can you send a debug log of an
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<BR>
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actual scan (with stripes) to me directly (not the list)?
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<BR>
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<P>Something like
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<BR>
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<P>SANE_DEBUG_MUSTEK=5 SANE_DEBUG_SANEI_SCSI=255 scanimage -d \
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<BR>
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mustek:/dev/scanner your options here 2>dbg.log
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<BR>
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<BR>
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Bye,
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<BR>
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Henning
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<BR>
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<P><PRE>
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--
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Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20please%20advise:%20Mustek%2012000SP,%20NCR810%20&%20color%20stripes&In-Reply-To=<20010121122559.A7719@vortex.swb.de>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0220.html">Remco Meeder: "setting default scanner"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0218.html">Jeffrey H. Ingber: "xscanimage crashes when using >1 V4L device"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0217.html">FJA van Zijp: "please advise: Mustek 12000SP, NCR810 & color stripes"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0228.html">FJA van Zijp: "Re: please advise: Mustek 12000SP, NCR810 & color stripes"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0228.html">FJA van Zijp: "Re: please advise: Mustek 12000SP, NCR810 & color stripes"</A>
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<EM>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Sun Jan 21 2001 - 03:43:07 PST</EM>
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