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Date: Mon, 18 Sep 2000 18:34:48 -0500 (CDT)
From: visigoth@telemere.net
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Subject: kern/21378: Accessing floppy under 4.1-STABLE (with DPT?) causes hang...
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>Number:         21378
>Category:       kern
>Synopsis:       Accessing floppy under 4.1-STABLE (with DPT?) causes hang...
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Sep 18 16:30:00 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     Damieon Stark <visigoth@telemere.net>
>Release:        FreeBSD 4.1-STABLE i386
>Organization:
Telemere Technologies Inc.
>Environment:


D mail.telemere.net 4.1-STABLE FreeBSD 4.1-STABLE #0: Wed Sep  6 12:28:02 
CDT 2000 visigoth@mail.telemere.net:/usr/src/sys/compile/MAIL  i386


>Description:

	Right now I am experiencing some really strange behavior with my
Dell servers.  Mounting a floppy, or accessing it via dd(1) causes a
system hang, (accompanied by a bios beep from the dpt card as though it is
being rebooted as well as the screen going dark).  I have quite a number of 
other machines which are dells which are not displaying this behavior, 
the only 2 things that I have been
able to discover as a parallel is the PM3334UW cards in all 3 of them, 
as well as so far having only tested it on dual capable motherboards.  I
have attempted hardware replacement of floppy drives (when I originally
thought I just had a bad floppy), booting SMP or UP kernels, as well as
makeing sure I have the most recent firmware on all the involved
boards...  there is also a little interesting tidbit in the dmesg from the
machines that they all have in common:

fd0c: hard error reading fsbn 16 of 16-31 (No status)

So far, testing includes machines
sup'd Sept 6th source (broken) all through Sept 15.  I know that it worked
back (way back) in early Aug. 

Rest of dmesg can be found at http://www.telemere.net/~visigoth/dmesg.txt

>How-To-Repeat:

	On any of MY dell machines with a DPT PM3334UW controller in them, build a new kernel and try to dd(1) or mount the floppy file system...

>Fix:

	I wish ;)


>Release-Note:
>Audit-Trail:
>Unformatted:


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