sane-project-website/old-archive/2001-06/0286.html

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<TITLE>sane-devel: SCSI/IRQ problem?</TITLE>
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<H1>SCSI/IRQ problem?</H1>
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<STRONG>From:</STRONG> Frederik Ramm (<A HREF="mailto:sane@mail.remote.org?Subject=Re:%20SCSI/IRQ%20problem?&In-Reply-To=&lt;20010627001841.A1413@aruba.remote.org&gt;"><EM>sane@mail.remote.org</EM></A>)<BR>
<STRONG>Date:</STRONG> Tue Jun 26 2001 - 15:18:41 PDT
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Hi,
<BR>
<P>&nbsp;&nbsp;&nbsp;I've been using my Fujitsu M3091 SCSI scanner with my self-made
<BR>
driver as the only device on an Adaptec 2940 until now with no
<BR>
trouble. Now I've upgraded the system - another mainboard etc., but
<BR>
the controller and scanner are still the same. Rebuilt sane and all,
<BR>
but now when I try to scan documents, the paper is fed through the
<BR>
scanner at an unusual speed, and the resulting data stream contains
<BR>
only garbage. (The scanner does seem to transfer the correct amount of
<BR>
data, and it does seem to respond correctly to the various SCSI
<BR>
commands as per SANE_DEBUG_... output).
<BR>
<P>I have noticed that during startup, the system reports that the
<BR>
Adaptec SCSI adapter is using the same IRQ as the AGP video
<BR>
controller.
<BR>
<P>Is it possible/likely that an IRQ problem results in a behaviour like
<BR>
this, i.e. simple scanner commands work fine but when reading scanned
<BR>
data you only get garbage? And, while slightly off-topic - with
<BR>
neither the Adaptec nor the graphics adapter having any hardwar or
<BR>
software configuration options, how can I avoid the IRQ conflict?
<BR>
<P>Bye
<BR>
Frederik
<BR>
<P><PRE>
--
Frederik Ramm ## eMail <A HREF="mailto:frederik@remote.org?Subject=Re:%20SCSI/IRQ%20problem?&In-Reply-To=&lt;20010627001841.A1413@aruba.remote.org&gt;">frederik@remote.org</A> ## N48<34>59.94 E008<30>24.36'
<P><P><P>--
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