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Xref: sserve comp.os.386bsd.bugs:2094 comp.os.386bsd.questions:8641 Path: sserve!newshost.anu.edu.au!munnari.oz.au!foxhound.dsto.gov.au!fang.dsto.gov.au!yoyo.aarnet.edu.au!news.adelaide.edu.au!basser.cs.su.oz.au!news.cs.su.oz.au!metro!dmssyd.syd.dms.CSIRO.AU!dmsperth.per.dms.CSIRO.AU!uniwa!harbinger.cc.monash.edu.au!yeshua.marcam.com!MathWorks.Com!europa.eng.gtefsd.com!howland.reston.ans.net!news.intercon.com!udel!news.sprintlink.net!news.clark.net!news.clark.net!not-for-mail From: ack@clark.net (Eric S. Hvozda) Newsgroups: comp.os.386bsd.bugs,comp.os.386bsd.questions Subject: Re: Protected Mode Lockup Problems--Please Help. Date: 8 Feb 1994 16:22:23 -0500 Organization: Clark Internet Services, Inc. Lines: 24 Message-ID: <2j8vqf$q2a@explorer.clark.net> References: <199402060404.XAA21622@freenet.buffalo.edu> <2j7ogh$pv@klaava.helsinki.fi> NNTP-Posting-Host: explorer.clark.net Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit In article <2j7ogh$pv@klaava.helsinki.fi>, Linus Torvalds <torvalds@klaava.Helsinki.FI> wrote: >In article <199402060404.XAA21622@freenet.buffalo.edu>, >Christopher L. Mikkelson <ae516@freenet.buffalo.edu> wrote: >>Hello all! >> A friend of mine is having troubles with his machine. Both Linux and >>FreeBSD 1.0 will sporadically lock up his system. Also, under DOS, >>DJGPP will occasionally lock up and QEMM will often do a cold reboot. >>I know it isn't a software problem, because it is shared by everything, >>so it must be either hardware or firmware. He is running a 386DX-40 with >>AMI BIOS v 1.0.55a. > >Two things I have found that cause most of these kinds of lockups under >linux: either faulty memory or a bad i387. It's probably the i387. There are a set of 4 conditions, if met, will lock a i386 if a i387 is installed. Basically the 386 ends up waiting on the 387 and vice versa. The gory details are covered in "Repairing and Upgrading PCs" written by Mueller and pubished by Que. I will post the 4 conditions when I gte home from work... -- Ack! Creek, not creek; Pop not soda; Car needs washed...