[5738] in linux-scsi channel archive
RE: Adaptec 2940UW controller driver for Linux
daemon@ATHENA.MIT.EDU (Allison, Bob)
Fri Jan 29 00:57:14 1999
From: "Allison, Bob" <BOB.allison@qwest.com>
To: "'doctor@fruitbat.org'" <doctor@fruitbat.org>,
"Allison, Bob" <BOB.allison@qwest.com>
Cc: linux-scsi@vger.rutgers.edu
Date: Fri, 29 Jan 1999 00:45:19 -0500
I'm not sure what you mean by the UW and U2W connectors. The U2W only had
one 50-pin ribbon cable connector. I believe that the last device on the
chain is providing termination, but I don't know if it is active or passive;
since these are SCSI-2 devices and not Ultras, I would assume that they
don't know what active terminators are.
BTW, I sent the card back where it came from and got the 2944UW in its
place, so I am running fine with my older FWD devices on the 2944 and my SE
devices on the 2940. (I don't have any Ultra-SCSI devices.)
-----Original Message-----
From: doctor@fruitbat.org [mailto:doctor@fruitbat.org]
Sent: Thursday, January 28, 1999 11:29 PM
To: BOB.allison@qwest.com
Cc: linux-scsi@vger.rutgers.edu
Subject: Re: Adaptec 2940UW controller driver for Linux
Allison, Bob said ...
>
> Well, maybe you can tell me what I did wrong.
>
> I pulled out the 2940UW and put the 2940U2W in its place, plugging the
> 50-pin ribbon into the U2W exactly as it was in the UW.
Just for the heck of it, did you try using the UW connector as well, or
just the U2W connector? Did you get the same results? If so, perhaps
the controller is bad.
> When I powered up the machine, the U2W saw no devices (at the BIOS
listing,
> had a hard time booting from /dev/sda2).
Hmm. Not sure what to have you try next, except perhaps trying the UW
bus instead and then only one device at a time. Again, it could be the
card is bad. Are you sure you have termination at the end of the chain?
Is one of the devices providing it or is it a separate terminator? Active
or Passive? Just exploring the possibilities.
> I swapped the boards back and everything was fine (both disks, the CD, and
> the tape were back).
--
Peter A. Castro (doctor@fruitbat.org) or (pcastro@us.oracle.com)
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