[242] in linux-scsi channel archive
Re: My Plextor locks up under Linux. Why?
daemon@ATHENA.MIT.EDU (Drew Eckhardt)
Mon Jun 12 00:05:33 1995
To: Mark Gleaves <mgleaves@Venus.mcs.com>
cc: linux-scsi@vger.rutgers.edu
In-reply-to: Your message of "Sun, 11 Jun 1995 17:01:57 CDT."
<Pine.3.89.9506111636.A456-0100000@Venus.mcs.com>
Date: Sun, 11 Jun 1995 21:36:19 -0600
From: Drew Eckhardt <drew@poohsticks.org>
In message <Pine.3.89.9506111636.A456-0100000@Venus.mcs.com>, mgleaves@Venus.mc
s.com writes:
>
>Does anyone else have a problem with their Plextor 4Plex CD-ROM drive
>locking up under Linux?
>
>I have a Plextor model PX-4XCH quad-speed CD-ROM drive that often
>locks up if I access it after long periods of inactivity. For example:
>The other night I mounted a CD and then forgot about it. I started up X
>and spent some time reading my mail across a SLIP link and doing some other
>stuff. About two hours later I tried to do an "ls" on the directory
>where I had mounted the CD. It hung. The light on the SCSI controller
>was on solid and I had to reboot.
TEXEL had _serious_ bugs of every sort in their firmware - drives
didn't disconnect and reconnect correctly, didn't handshake correctly,
etc.
I suspect that the resulting reputation was what led to the name
change from TEXEL to PLEXTOR.
>At this point I think there are three likely possibilities for the
>source of my problems:
>
>1. A bug in the mid-level Linux SCSI code (doubtful).
>2. A bug in the Plextor firmware.
Given their history as TEXEL, I find this highly likely.
>3. It's just my drive that's broken.
>
>Any ideas?
If you upgrade to Linux 1.2.8 or newer, the NCR driver knows how to
do a hard SCSI reset. This may or may not work arround your problem.
