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102 wiersze
4.8 KiB
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<!-- received="Tue Mar 23 04:10:12 1999 PST" -->
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<!-- sent="Tue, 23 Mar 1999 13:08:48 +0100" -->
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<!-- name="Oliver Rauch" -->
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<!-- email="oliver.rauch@Wolfsburg.DE" -->
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<!-- subject="Re: Calibration problem on UMAX Astra 1220S" -->
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<!-- inreplyto="Calibration problem on UMAX Astra 1220S" -->
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<title>sane-devel: Re: Calibration problem on UMAX Astra 1220S</title>
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<h1>Re: Calibration problem on UMAX Astra 1220S</h1>
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<b>Oliver Rauch</b> (<a href="mailto:oliver.rauch@Wolfsburg.DE"><i>oliver.rauch@Wolfsburg.DE</i></a>)<br>
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<i>Tue, 23 Mar 1999 13:08:48 +0100</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#221">[ date ]</a><a href="index.html#221">[ thread ]</a><a href="subject.html#221">[ subject ]</a><a href="author.html#221">[ author ]</a>
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<li> <b>Next message:</b> <a href="0222.html">wolfgang Rapp: "Re: xsane-0.18 available"</a>
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<li> <b>Previous message:</b> <a href="0220.html">Dean Martin Townsley: "Calibration problem on UMAX Astra 1220S"</a>
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<li> <b>Maybe in reply to:</b> <a href="0220.html">Dean Martin Townsley: "Calibration problem on UMAX Astra 1220S"</a>
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<!-- nextthread="start" -->
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<li> <b>Next in thread:</b> <a href="0237.html">Oliver Rauch: "Re: Calibration problem on UMAX Astra 1220S"</a>
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<!-- reply="end" -->
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</ul>
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<!-- body="start" -->
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Dean Martin Townsley wrote:<br>
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<p>
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<i>> Hi all,</i><br>
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<i>> My problem with the calibration is simple: I can't get it to perform the</i><br>
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<i>> calibration. I'm using sane 1.00 with the build-1 patch for the umax drivers</i><br>
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<i>> and xsane 0.18 for the frontend (tried xscanimage too).</i><br>
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<i>> I stuck a debug message in the code to supplement the messages already</i><br>
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<i>> there and found that dev->do_calibration was zero when the scan process went</i><br>
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<i>> through the do_calibration() function even when the box for "Quality</i><br>
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<i>> Calibration" was checked in the interface. The code checks and to me seems</i><br>
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<i>> to only perform the calibration if this is nonzero. I don't know if this is</i><br>
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<i>> a problem in the driver itself or somewhere else but both xsane and</i><br>
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<i>> xscanimage exhibit the same problem. That's as far as I got, I have final</i><br>
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<i>> exams for the next two days (take homes) so I won't be able to fiddle again</i><br>
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<i>> until after that probably, but I figured I'd say something so someone with</i><br>
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<i>> better knowledge of the code can maybe investigate.</i><br>
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<i>></i><br>
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<i>> oh, btw, /proc/scsi/scsi says</i><br>
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<i>> Host: scsi0 Channel: 00 Id: 05 Lun: 00</i><br>
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<i>> Vendor: UMAX Model: Astra 1220S Rev: V1.1</i><br>
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<i>> Type: Scanner ANSI SCSI revision: 02</i><br>
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<i>></i><br>
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<i>> Which I presume means it's firmware 1.1, (out of a possible 1.5, ugh).</i><br>
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<i>></i><br>
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<p>
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Hi Dean,<br>
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<p>
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like described in the sane-umax-docs the quality calibration does not work with<br>
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all scanners!<br>
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<p>
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What happens or does not happen if you enable quality calibration?<br>
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<p>
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Background:<br>
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There are some problems with calibration by driver. UMAX uses a different<br>
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kind of calibration for each scanner model and firmware. I only know the one of<br>
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the Umax Supervista S12 with firmware 2.0.<br>
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<p>
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If you set the quality calibration button, the driver requests a quality<br>
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calibration<br>
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from the scanner. If the scanner is not able to do the quality calibration on<br>
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its own,<br>
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it requests the driver to do this. In that case do_calibration is set in the<br>
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driver.<br>
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Then the scanner sends the calibration data, the driver does the calibration and<br>
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<p>
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sends back the calibration data.<br>
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<p>
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If the scanner does not request that the driver has to do the calibration, there<br>
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is<br>
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nothing what the driver can do.<br>
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<p>
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Bye<br>
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Oliver<br>
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<p>
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<pre>
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--
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EMAIL: <a href="mailto:Oliver.Rauch@Wolfsburg.DE">Oliver.Rauch@Wolfsburg.DE</a>
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WWW: <a href="http://www.wolfsburg.de/~rauch">http://www.wolfsburg.de/~rauch</a>
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<p>
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<p>
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<p>
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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.mostang.com/sane/">http://www.mostang.com/sane/</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="0222.html">wolfgang Rapp: "Re: xsane-0.18 available"</a>
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<li> <b>Previous message:</b> <a href="0220.html">Dean Martin Townsley: "Calibration problem on UMAX Astra 1220S"</a>
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<li> <b>Maybe in reply to:</b> <a href="0220.html">Dean Martin Townsley: "Calibration problem on UMAX Astra 1220S"</a>
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<!-- nextthread="start" -->
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<li> <b>Next in thread:</b> <a href="0237.html">Oliver Rauch: "Re: Calibration problem on UMAX Astra 1220S"</a>
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<!-- reply="end" -->
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</ul>
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