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<TITLE>sane-devel: Re: SANE and Linux kernel 2.4.0</TITLE>
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<META NAME="Author" CONTENT="abel deuring (a.deuring@satzbau-gmbh.de)">
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<META NAME="Subject" CONTENT="Re: SANE and Linux kernel 2.4.0">
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<H1>Re: SANE and Linux kernel 2.4.0</H1>
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<!-- received="Wed Jan 10 12:37:16 2001" -->
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<!-- sent="Wed, 10 Jan 2001 23:11:26 +0100" -->
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<!-- name="abel deuring" -->
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<!-- subject="Re: SANE and Linux kernel 2.4.0" -->
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<!-- id="3A5CDE0E.F922FDC7@satzbau-gmbh.de" -->
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<!-- inreplyto="3A5B7CA8.A01A21E8@interlog.com" -->
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<STRONG>From:</STRONG> abel deuring (<A HREF="mailto:a.deuring@satzbau-gmbh.de?Subject=Re:%20SANE%20and%20Linux%20kernel%202.4.0&In-Reply-To=<3A5CDE0E.F922FDC7@satzbau-gmbh.de>"><EM>a.deuring@satzbau-gmbh.de</EM></A>)<BR>
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<STRONG>Date:</STRONG> Wed Jan 10 2001 - 14:11:26 PST
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<P>
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<LI><STRONG>Next message:</STRONG> <A HREF="0118.html">abel deuring: "Re: MICROTEK2 failure : out of memory with kernel 2.4"</A>
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<UL>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0116.html">Henning Meier-Geinitz: "Re: snapscan"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0103.html">Douglas Gilbert: "SANE and Linux kernel 2.4.0"</A>
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<HR NOSHADE><P>
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<P>
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Douglas Gilbert wrote:
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<BR>
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<EM>>
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</EM><BR>
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<EM>> Tim Waugh wrote on the linux kernel list:
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</EM><BR>
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<EM>> > I'm having problems with using xsane to acquire a preview from an HP
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</EM><BR>
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<EM>> > ScanJet 5P connected to an AHA-2940. 2.3.42 is the last kernel that
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</EM><BR>
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<EM>> > works right for me.
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</EM><BR>
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<EM>> >
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</EM><BR>
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<EM>> > The symptom is that the scanner starts to make scanning sounds, then
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</EM><BR>
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<EM>> > stops, and xsane says 'Error during read: Error during device I/O'.
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> Tim and I have been looking at this offline. The significance
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</EM><BR>
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<EM>> of lk 2.3.43 was the addition of a new sg driver that has an
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</EM><BR>
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<EM>> additional interface. Recent versions of SANE use that newer
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</EM><BR>
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<EM>> sg interface. The problem that Tim reported seemed to be caused
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</EM><BR>
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<EM>> by timeouts ** resulting in scsi bus resets. Anyway the problem
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</EM><BR>
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<EM>> seems to disappear with the recently released SANE 1.0.4 .
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</EM><BR>
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<EM>> [The original report was based on SANE 1.0.3 and earlier.]
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> There is also a problem report with the SnapScan 1236 <--> aha152x
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</EM><BR>
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<EM>> combination also based on SANE 1.0.3 . This one is looking
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</EM><BR>
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<EM>> like an "uninitialized errno" bug fixed in SANE 1.0.4 .
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> ** SANE's newer sg interface shortens the per command timeout
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</EM><BR>
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<EM>> >from 10 minutes to 10 seconds. Most other OSes have a timeout
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</EM><BR>
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<EM>> value of 1 minute or more. I suspect 10 seconds may be too short.
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</EM><BR>
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<P>I've fixed this in the CVS system.
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<BR>
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<P>I made some additional modifications to sanei_scsi.c:
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<BR>
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<P>- better determination of sanei_scsi_max_request_size. For a low level
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<BR>
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driver without scatter/gather support, it should no longer be necessary
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<BR>
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to set the configure option SCSIBUFFERSIZE or the environment var
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<BR>
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SANE_SG_BUFFERSIZE.
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<BR>
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<P>- find_devices cannow also handle the device file names from devfs
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<BR>
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<P>- additional debug output: sense buffer, device status, host status and
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<BR>
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driver status
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<BR>
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<P>Abel
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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:%20SANE%20and%20Linux%20kernel%202.4.0&In-Reply-To=<3A5CDE0E.F922FDC7@satzbau-gmbh.de>">majordomo@mostang.com</A>
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</PRE>
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<!-- next="start" -->
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<LI><STRONG>Next message:</STRONG> <A HREF="0118.html">abel deuring: "Re: MICROTEK2 failure : out of memory with kernel 2.4"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0116.html">Henning Meier-Geinitz: "Re: snapscan"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0103.html">Douglas Gilbert: "SANE and Linux kernel 2.4.0"</A>
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<SMALL>
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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>Wed Jan 10 2001 - 12:39:10 PST</EM>
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