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Newsgroups: comp.unix.bsd Path: sserve!manuel.anu.edu.au!munnari.oz.au!news.hawaii.edu!ames!saimiri.primate.wisc.edu!sdd.hp.com!ncr-sd!crash!fpm From: fpm@crash.cts.com (Frank Maclachlan) Subject: Re: Occasional system hangs Organization: CTS Network Services (crash, ctsnet), El Cajon, CA Date: 11 Dec 92 14:28:22 PST Message-ID: <1992Dec11.142822.6314@crash> Summary: FPU can lockup system References: <1g95ueINNhri@manuel.anu.edu.au> <andrewh.724059111@bruce.cs.monash.edu.au> <1gaclpINN84v@hrd769.brooks.af.mil> Lines: 11 > I don't think more RAM will help. I have 32M of RAM and and 32M swap >partition. It still hangs. nroff is the usual culprit for me. I had the same problem. My system system would lock up completely from time to time. Nroff seemed to be particularly troublesome. I resolved it by removing my ULSI 80387 fpu. You can see if this is the problem by modifying npxprobe() in '/sys/i386/isa/npx.c' to not find the fpu and return 0. This causes the fpu to be ignored. Hope this helps, Frank MacLachlan