[267] in linux-scsi channel archive
BusLogic / CDROM problem
daemon@ATHENA.MIT.EDU (Leonard N. Zubkoff)
Mon Jun 19 20:16:20 1995
Date: Mon, 19 Jun 1995 16:40:48 -0700
From: "Leonard N. Zubkoff" <lnz@dandelion.com>
To: bsa@kf8nh.wariat.org
Cc: eric@aib.com, baba@beckman.uiuc.edu, linux-scsi@vger.rutgers.edu
In-Reply-To: "Brandon S. Allbery KF8NH"'s message of Mon, 19 Jun 1995 17:34:56 -0400 <199506192135.RAA03403@twit.kf8nh.wariat.org>
Date: Mon, 19 Jun 1995 17:34:56 -0400
From: "Brandon S. Allbery KF8NH" <bsa@kf8nh.wariat.org>
In your message of Mon, 19 Jun 1995 12:05:16 EDT, you write:
+-----
| >CD. The CD was apparently "skipping" (the time readout of the xmcd program
| >was bouncing around all over the place), so I hit the "Stop" button on
| xmcd. > I got a lot of these errors and eventually I could not access any of
| my >SCSI devices.
|
| Yes, it looks like the device just went mental. I don't have any
| good suggestions for fixes currently. In the 1.3 series we will be adding
+--->8
The early NEC 3Xp CDROMs had a firmware bug which caused occasional bus
hangs and rather-more-than-occasional inability to find audio tracks.
Sounds like the buggy code got recycled...
A bus hang would be perfectly consistent with the observed behavior shown in
the log excerpts. The BusLogic controller is apparently also tied up, which is
why the "OGMB still full" message occurs. The present BusLogic driver, despite
all the messages about sending RESETs, is not actually doing anything, so it
cannot recover from this condition.
Leonard
