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