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<TITLE>sane-devel: Re: Epson 1200S: "[epson] ident failed"</TITLE>
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<META NAME="Author" CONTENT="John Vickers (jvickers@dial.pipex.com)">
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<META NAME="Subject" CONTENT="Re: Epson 1200S: "[epson] ident failed"">
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<H1>Re: Epson 1200S: "[epson] ident failed"</H1>
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<!-- received="Wed Jan 26 01:31:46 2000" -->
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<!-- subject="Re: Epson 1200S: "[epson] ident failed"" -->
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<STRONG>From:</STRONG> John Vickers (<A HREF="mailto:jvickers@dial.pipex.com?Subject=Re:%20Epson%201200S:%20"[epson]%20ident%20failed"&In-Reply-To=<388EC005.338C5490@dial.pipex.com>"><EM>jvickers@dial.pipex.com</EM></A>)<BR>
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<STRONG>Date:</STRONG> Wed Jan 26 2000 - 01:36:05 PST
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<LI><STRONG>Next message:</STRONG> <A HREF="0245.html">John Vickers: "Re: Epson 1200S: "[epson] ident failed""</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0243.html">Harald Finster: "Re: Microtek Scanmaker X6 SCSI"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0212.html">Karl Heinz Kremer: "Re: Epson 1200S: "[epson] ident failed""</A>
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<P>
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Karl Heinz Kremer wrote:
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<BR>
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<EM>>
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</EM><BR>
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<EM>> On Mon, Jan 24, 2000 at 09:43:39AM +0000, John Vickers wrote:
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</EM><BR>
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<EM>> > If I then do:
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</EM><BR>
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<EM>> > /usr/local/bin/scanimage -v --device epson:/dev/scanner -T
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</EM><BR>
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<EM>> > that also PASSes (scanner whirrs, etc), but only the first time I try it.
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> ... that's a known problem. You can only do this once and then you have to
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</EM><BR>
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<EM>> reset the scanner. I don't have an idea yet why, but this is on my list
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</EM><BR>
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<EM>> of things to work out. It's no real problem, because it only happens
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</EM><BR>
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<EM>> when you use the -T switch, the "normal" scanning works just fine (at
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</EM><BR>
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<EM>> least for me).
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</EM><BR>
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<P>OK, that's what I get too. I'm now running Sunday's snapshot,
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<BR>
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with the 0.1.6b Epson backend. I wouldn't say I'd thoroughly tested
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<BR>
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it, but scanning seems to work fine so far.
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<BR>
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<P>So the situation with Epson scanners is: scanning works fine,
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<BR>
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but the self-test is quite broken ? ;-)
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<BR>
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<P>I had a brief poke arround with gdb, and the "initialise"
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<BR>
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command is failing, before the failure of the "identify"
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<BR>
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command which causes the error message. The status of the initialise
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<BR>
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command doesn't seem to get checked. Later on, the failures
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<BR>
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don't get tested for, the driver assumes scanner is initialised,
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<BR>
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and dereferences some garbage pointer somewhere.
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<BR>
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<P>I might try investigating what state '-T' leaves the scanner in,
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<BR>
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since '-T' does work the first time it's tried.
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<BR>
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<P>Where did you get to with this ?
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<BR>
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<P><P><P><EM>> > Epson's internal termination disabled; Sun active terminator
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</EM><BR>
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<EM>> > installed in Epson.
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> Any reason why you are not using the internal termination?
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</EM><BR>
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<P>No very compelling ones (I did switch off the internal termination) :
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<BR>
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- The Epson didn't state that the internal switchable termination
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<BR>
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was active, so I assumed it wasn't.
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<BR>
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- If I didn't put the terminator in the Epson, it would have gone
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<BR>
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in a large box of assorted connectors and cables. This way,
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<BR>
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I know where to find it...
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<BR>
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<P>Real SCSI connectors, internal switchable termination, and a PCI SCSI
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<BR>
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card that supports other devices and isn't completely crap were
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<BR>
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some of the reasons I got an Epson scanner.
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<BR>
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<P><P>BTW, Is anyone planning to update the Epson backend in the snapshots
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<BR>
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to 0.1.7 ?
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<BR>
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<P><P>Regards,
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<BR>
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<P>John.
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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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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0245.html">John Vickers: "Re: Epson 1200S: "[epson] ident failed""</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0243.html">Harald Finster: "Re: Microtek Scanmaker X6 SCSI"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0212.html">Karl Heinz Kremer: "Re: Epson 1200S: "[epson] ident failed""</A>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Wed Jan 26 2000 - 01:33:58 PST</EM>
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