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Date:      Tue, 16 Mar 1999 08:21:41 -0800 (PST)
From:      "Jason K. Fritcher" <jkf@wolfnet.org>
To:        "Kenneth D. Merry" <ken@plutotech.com>
Cc:        freebsd-scsi@FreeBSD.ORG
Subject:   Re: Boot-time scsi probe problem
Message-ID:  <Pine.BSF.4.05.9903160817280.36606-100000@outreach.wolfnet.org>
In-Reply-To: <199903160625.XAA23822@panzer.plutotech.com>

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On Mon, 15 Mar 1999, Kenneth D. Merry wrote:
> This sounds and looks like a known problem with the Adaptec 7890 chips.  A
> number of people have reported this.

Hmmm... Was this reported to the list, and if so, how long ago? I checked
the archives for -scsi and didn't see anything in there on this.

> Justin has reproduced the problem (with a lot of help from Tor Egge) and
> has a PCI bus trace showing the problem.
> 
> He said that there may be a bug in the 7890 that causes it to hang in
> certain circumstances; he has mailed Adaptec asking for information.

Joy... I guess those certain circumstances are happening almost all the time
for me.

> Since he's not in town at the moment, I wouldn't expect any response from
> him on this for a few days.
> 
> I suggest that you stick with the kernel that boots for now, if you can.
> The hang seems to be timing related in some way, so you might get different
> results if you stick your hard disk on the Ultra-Wide bus instead of the
> Ultra-2 bus.  Hopefully Justin will be able to come up with a fix for it
> before too long.

Ok. I will give this a try later this evening and see if it helps. I did try
to take the drive out of LVD mode and put it in SE mode on the U2W bus, but
I didn't try it on the UW bus. Thanx for the idea.

> You also may want to subscribe to the -scsi list, there's a lot less noise
> on this list than on many of the other FreeBSD lists.  (for now, at least)

I did this too. Thanx for the help.

--
 Jason K. Fritcher
  jkf@wolfnet.org



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