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Date:      Wed, 03 Jul 96 09:10:00 PDT
From:      Duncan Barclay <Duncan.Barclay@pa-consulting.com>
To:        freebsd-hackers <freebsd-hackers@freebsd.org>
Subject:   Re: SIG's 11 and 6...
Message-ID:  <31DA9EFA@SMTPGATE.PA-CONSULTING.COM>

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Although not on FreeBSD, I have seen similar odd crashes on a high
end petium box which was shipped without a CPU fan. Putting one on
solved the problem, again it was found that running the box with the lid off 
helped
before the fan went on.

Duncan

 ----------
From: owner-freebsd-hackers
To: walter
Cc: hackers
Subject: Re: SIG's 11 and 6...
Date: 02 July 1996 20:09

[...]
> HEAT! My pentium 120 was having the above problems.  Switching out memory
> would solve them for a day or two, but the problems would then start to
> build up again.  FINALLY I replaced the CPU fan and added a big waffle fan
> in the front of the case and VOILA...  No more SIG's for the last week.
> Chances are that in the past the time involved in cracking the case and
> swapping memory dropped the temp enough to alleviate the problem.

I've got a Pentium 133 here running 2.2-960612-SNAP, and it too was
experiencing more or less random Segmentation Faults, Bus Errors,
and/or Illegal Instructions.  This behavior persisted despite swapping
SIMMs several times.  I finally resolved this with a strange fix:
though the CPU can run at 133MHz, I clocked it down to 120MHz via jumper
settings on the motherboard.  I haven't had any problems with it since.

I wonder if my problem is actually heat-related as well?  Reducing the
CPU clock may simply cause the chip to run cooler.  Anyone else have
similar troubles, or other ideas?


 --
delerium@ais.net




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