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Date:      Fri, 7 Jun 2002 16:44:29 -0700 (PDT)
From:      Frank Mayhar <frank@exit.com>
To:        David Schultz <dschultz@uclink.Berkeley.EDU>
Cc:        Alain Fauconnet <alain@cscoms.net>, freebsd-stable@FreeBSD.ORG
Subject:   Re: Numerous hard hangs on TWO different ASUS P4T-E w/P4 1.6G
Message-ID:  <200206072344.g57NiTwD033645@realtime.exit.com>
In-Reply-To: <20020607143308.A1030@HAL9000.wox.org>

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David Schultz wrote:
> Don't rule out hardware problems until you've tried a different model
> motherboard.  Some old ASUS boards have a problem where, under intense
> memory load, the voltage drops below the signalling threshhold and the
> box locks up as you've described.  (ASUS won't readily admit to this
> or any of the other bugs in their boards, but ask them why they did
> the third revision to the P2B-F.)  That's just an example, but the
> point is that both of your P4T-Es could have the same bug.

Well, considering that many different people are seeing this on different
hardware (I have in fact seen it on two different motherboards, a Tyan
Thunder 2500 with dual PIIIs and my current 2466N-4M with dual AMD MPs,
different SCSI controllers, too), I think it must be some new bug in
FreeBSD.  Perhaps in the interrupt handling?  I don't really know where
to begin to look; if someone could suggest some places, that would be
very useful.

So far, none of the various suggestions have made any difference at all.
I have yet to turn off my IDE and parallel port to get IRQs back, I'll
do that this weekend.
-- 
Frank Mayhar frank@exit.com	http://www.exit.com/
Exit Consulting                 http://www.gpsclock.com/

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