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<TITLE>sane-devel: Re: Symbios SCSI problem? (was Epson GT8700: "</TITLE>
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<META NAME="Author" CONTENT="Douglas Gilbert (dgilbert@interlog.com)">
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<META NAME="Subject" CONTENT="Re: Symbios SCSI problem? (was Epson GT8700: "Error ...")">
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<H1>Re: Symbios SCSI problem? (was Epson GT8700: "Error ...")</H1>
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<!-- received="Thu Oct 5 19:42:07 2000" -->
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<!-- subject="Re: Symbios SCSI problem? (was Epson GT8700: "Error ...")" -->
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<STRONG>From:</STRONG> Douglas Gilbert (<A HREF="mailto:dgilbert@interlog.com?Subject=Re:%20Symbios%20SCSI%20problem?%20(was%20Epson%20GT8700:%20%20"Error%20...")&In-Reply-To=<39DD3C3B.2F5E440B@interlog.com>"><EM>dgilbert@interlog.com</EM></A>)<BR>
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<STRONG>Date:</STRONG> Thu Oct 05 2000 - 19:43:07 PDT
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<P>
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<LI><STRONG>Next message:</STRONG> <A HREF="0061.html">Phil Cummins: "Symbios SCSI with Epson GT8700"</A>
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<UL>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0059.html">Karsten Festag: "Re: news from microtek2 backend"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0054.html">Phil Cummins: "Symbios SCSI problem? (was Epson GT8700: "Error ...")"</A>
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<P>
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Phil Cummins wrote:
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<BR>
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<EM>>
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</EM><BR>
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<EM>> Hello,
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> I'm sorry for cluttering up the mailing list with so
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</EM><BR>
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<EM>> many postings. However, I noticed what may be an important
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</EM><BR>
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<EM>> aspect of my problem with the GT 8700 scanner.
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> As I mentioned, I use Redhat 6.2, kernel 2.2.14, and
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</EM><BR>
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<EM>> my SCSI controller is an on-board NCR 53c875 (now known
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</EM><BR>
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<EM>> as Symbios? - driver is sym53c8xx). I am using sane-1.03.
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</EM><BR>
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<EM>> Detection of the scanner gets reported in the boot message
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</EM><BR>
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<EM>> and appears in /proc/scsi/scsi as:
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> Host: scsi0 Channel: 00 Id: 02 Lun: 00
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</EM><BR>
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<EM>> Vendor: EPSON Model: SCANNER GT-8700 Rev: 1.03
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> and indeed the Lun is set to 2 on the scanner. My understanding
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</EM><BR>
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<EM>> is that this should correspond to /dev/sgc, so I made the
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</EM><BR>
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<EM>> soft link:
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</EM><BR>
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<EM>> /dev/scanner -> /dev/sgc
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</EM><BR>
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<P>That's the device "id" that is 2, _not_ the LUN.
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<BR>
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Irrespective of the scsi adapter number, channel, id or lun;
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<BR>
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sg sees it as the first scsi device and maps it to
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<BR>
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/dev/sga (or possibly /dev/sg0 which is now preferred).
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<BR>
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<P><EM>> However, scanimage -L reports:
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</EM><BR>
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<EM>> device `epson:/dev/sgb' is a Epson GT-8700 flatbed scanner
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</EM><BR>
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<P>So perhaps something appeared _before_ the scanner in the
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<BR>
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'cat /proc/scsi/scsi' output?
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<BR>
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<P><EM>> So, it seems to be getting the wrong Lun.
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</EM><BR>
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The LUN is zero and plays no part in this.
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<BR>
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<P><EM>> I tried removing
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</EM><BR>
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<EM>> the link /dev/scanner->/dev/sdc, and then scanimage doesn't
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</EM><BR>
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<EM>> find the scanner.
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</EM><BR>
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<P>Yikes. Just as well that your system doesn't have 3 scsi
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<BR>
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disks or that may have wiped out the third one.
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<BR>
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<P>Try changing it to /dev/scanner -> /dev/sgb
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<BR>
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as suggested by scanimage -L
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<BR>
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<P><EM>> Finally, I tried changing the Lun on the
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</EM><BR>
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<EM>> scanner to 1 and rebooting. I also linked /dev/scanner->/dev/sdc.
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</EM><BR>
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<EM>> Now scanimage -L waits a long time before reporting:
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> [s9036] sense_handler() : sense code = f0
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</EM><BR>
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<EM>> Segmentation fault
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</EM><BR>
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<P>Bet the SANE designers never thought anyone would do that :-)
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<BR>
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<BR>
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<EM>> In any case, it now appears that what I thought was a
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</EM><BR>
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<EM>> problem with the Epson GT8700 is actually a problem with
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</EM><BR>
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<EM>> my Symbios SCSI, don't you think? (Somehow I doubt that the
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</EM><BR>
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<EM>> SCSI people will be very surprised by this...)
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</EM><BR>
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<P>Not sure about that, I thought the 53c8xx driver was pretty good
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<BR>
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(the same driver runs in FreeBSD) and is actively maintained.
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<BR>
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Try some of the suggestions above and contact me if you have
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<BR>
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further problems.
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<BR>
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<P>Doug Gilbert
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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:%20Symbios%20SCSI%20problem?%20(was%20Epson%20GT8700:%20%20"Error%20...")&In-Reply-To=<39DD3C3B.2F5E440B@interlog.com>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0061.html">Phil Cummins: "Symbios SCSI with Epson GT8700"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0059.html">Karsten Festag: "Re: news from microtek2 backend"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0054.html">Phil Cummins: "Symbios SCSI problem? (was Epson GT8700: "Error ...")"</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>Thu Oct 05 2000 - 19:46:44 PDT</EM>
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