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126 wiersze
4.8 KiB
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<TITLE>sane-devel: Re: Snapscan problem</TITLE>
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<META NAME="Author" CONTENT="David Gesswein (djg@drs-esg.com)">
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<META NAME="Subject" CONTENT="Re: Snapscan problem">
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<H1>Re: Snapscan problem</H1>
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<STRONG>From:</STRONG> David Gesswein (<A HREF="mailto:djg@drs-esg.com?Subject=Re:%20Snapscan%20problem&In-Reply-To=<200102251707.MAA07631@drs-esg.com>"><EM>djg@drs-esg.com</EM></A>)<BR>
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<STRONG>Date:</STRONG> Sun Feb 25 2001 - 09:07:55 PST
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<LI><STRONG>Next message:</STRONG> <A HREF="0218.html">Christoph H.: "Re: always Segmentation Fault"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0216.html">Uwe Wagner: "Re: snapscan, problem in color mode : horizontal shift"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0212.html">Steve Underwood: "Snapscan problem"</A>
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<P>
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<EM>> I am using RedHat 6.2, with all the relevant update RPMs, plus a stock
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</EM><BR>
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<EM>> Linux 2.2.18 kernel I needed to get USB working (not for the scanner,
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</EM><BR>
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<EM>> though). My scanner is an Acer 610+ (SCSI) connected to its own private
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</EM><BR>
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<EM>> Adaptec 2840 card (aic7xxx.o driver, as a module).
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</EM><BR>
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<EM>>
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</EM><BR>
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I am using a 610+ under kernel 2.2.16-4 with a 53c1010 Symbios card, same
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<BR>
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xsane and snapscan (I think, I am not sure how to verify snapscan version,
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<BR>
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the tarball I had around was that version).
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<BR>
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I don't have the pause problems. I did set under xsane standard options the
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<BR>
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colour lines per read to maximum, I sort of remember that low values caused
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<BR>
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problems but a quick test now (300 dpi 8.5x11) seemed to still work.
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<BR>
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<P>The problem I am seeing is some vertical banding in solid colors. It
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<BR>
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looks like the scanner calibration is not being done. Under windows at
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<BR>
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the begining of the scan it seems to do an extra step that I don't get
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<BR>
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under Linux. I never found a way of capturing the scsi commands being sent
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<BR>
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under Windows 98 to figure out what the problem was. Since I use it most
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<BR>
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for black and white scans I haven't really looked into it.
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<BR>
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<P>Other things I have done that is different but probably is not related
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<BR>
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to your problem:
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<BR>
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I modified the snapscan driver to support my sheet feeder.
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<BR>
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When I added some other external devices to the scanner scsi chain they
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<BR>
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were having errors. I found some capacitors inside the scanner acrooss
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<BR>
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the scsi lines which I desoldered so it could be terminated better.
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<BR>
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<P>If you have anything useful for me to test/look at for you email me.
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<BR>
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<P>Thanks,
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<BR>
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David Gesswein
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<BR>
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<A HREF="http://www.pdp8.net/">http://www.pdp8.net/</A> -- Run an old computers with blinkenlights
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<BR>
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Have any PDP-8 stuff your willing to part with?
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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:%20Snapscan%20problem&In-Reply-To=<200102251707.MAA07631@drs-esg.com>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0218.html">Christoph H.: "Re: always Segmentation Fault"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0216.html">Uwe Wagner: "Re: snapscan, problem in color mode : horizontal shift"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0212.html">Steve Underwood: "Snapscan problem"</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 Feb 25 2001 - 08:57:39 PST</EM>
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