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<!-- received="Thu Nov 18 15:57:23 1999 PST" -->
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<!-- sent="Thu, 18 Nov 1999 16:56:00 -0700 (MST)" -->
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<!-- name="Kevin Charter" -->
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<!-- email="charter@cs.ualberta.ca" -->
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<!-- subject="Re: Opinion about SCSI scanner with FreeBSD" -->
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<!-- id="19991118235603Z433681-22841+70@scapa.cs.ualberta.ca" -->
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<!-- inreplyto="Pine.BSF.3.96.991118134138.68833A-100000@condor.resnet.mtu.edu" -->
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<title>sane-devel: Re: Opinion about SCSI scanner with FreeBSD</title>
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<h1>Re: Opinion about SCSI scanner with FreeBSD</h1>
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<b>Kevin Charter</b> (<a href="mailto:charter@cs.ualberta.ca"><i>charter@cs.ualberta.ca</i></a>)<br>
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<i>Thu, 18 Nov 1999 16:56:00 -0700 (MST)</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#174">[ date ]</a><a href="index.html#174">[ thread ]</a><a href="subject.html#174">[ subject ]</a><a href="author.html#174">[ author ]</a>
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<li> <b>Next message:</b> <a href="0175.html">Kevin Charter: "Re: SANE 1.0.1 locks up system: Linux 2.2.10, Agfa SnapScan 1236s"</a>
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<li> <b>Previous message:</b> <a href="0173.html">Richard Kuhlbars: "Re: Error compiling xsane 0.44"</a>
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</ul>
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<i>> On Thu, 18 Nov 1999, German Jose Gomez Garcia wrote:</i><br>
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<i>> </i><br>
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<i>> > I had bought and AGFA Snapscan 1236 SCSI, and it was my worst </i><br>
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<i>> > nightmare. I own a Supermicro P6DBU (dual PII + U2W SCSI) and I was not </i><br>
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...<br>
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<i>> --> I'm having problems too, but I have to think it's the SANE driver</i><br>
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<i>> that's broken, not the scanner. It works flawlessly for me under Win95</i><br>
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<i>> on either of the adapters I've tried it on. (Granted, it's the only SCSI</i><br>
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<i>> device in my system.) I originally bought it because it got much better</i><br>
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<i>> reviews for image quality than the similarly-priced UMAX scanners.</i><br>
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<i>> </i><br>
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<i>> I agree, though, that if you want to use a scanner under FreeBSD, you'd be</i><br>
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<i>> better off buying one that's already supported well. I'm not sure when</i><br>
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<i>> (if ever) the Agfa back end will be fixed.</i><br>
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<p>
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It may well be the backend that is broken. A lot of people with earlier<br>
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AGFA scanners use it without the problems that 1236s users sometimes<br>
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report. It could be that the 1236s is not really compatible with<br>
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the 300/310/600 models; unfortunately, I haven't been able to obtain<br>
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programming documentation for the 1236s, so I have no reference for<br>
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what the differences between it and previous AGFA models are (and<br>
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advertising blurbs don't do the trick). I also don't own a 1236s,<br>
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and I'm not likely to any time soon, so I can't even experiment<br>
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with it.<br>
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<p>
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Of course, it could also be that the backend is doing something<br>
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weird with SCSI commands (for example, the problem with the new<br>
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generic scsi driver occurred because the main process and the<br>
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child process forked for reading both tried to talk to the<br>
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scanner). But I really don't do anything esoteric with SCSI. I just<br>
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use the sane SCSI functions as they were intended, AFAIK. I can check<br>
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that I'm not writing outside buffers and that kind of thing, but<br>
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that's about it. Perhaps part of the problem is that some of the<br>
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AGFA-specific stuff in the commands has changed for the 1236s.<br>
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<p>
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<p>
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I'll keep trying to work on it, and keep trying to get documentation.<br>
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But in the interim, the 1236s can't be said to be officially supported in<br>
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the backend. I'll put a disclaimer to that effect on the website.<br>
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<p>
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Kevin<br>
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<pre>
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--
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Kevin Charter
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<a href="mailto:charter@cs.rice.edu">charter@cs.rice.edu</a> | charter@cs.ualberta.ca
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<a href="http://www.cs.rice.edu/~charter">http://www.cs.rice.edu/~charter</a> | http://www.cs.ualberta.ca/~charter
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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="0175.html">Kevin Charter: "Re: SANE 1.0.1 locks up system: Linux 2.2.10, Agfa SnapScan 1236s"</a>
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<li> <b>Previous message:</b> <a href="0173.html">Richard Kuhlbars: "Re: Error compiling xsane 0.44"</a>
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</ul>
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