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Path: sserve!newshost.anu.edu.au!munnari.oz.au!spool.mu.edu!howland.reston.ans.net!EU.net!sun4nl!news.nic.surfnet.nl!highway.LeidenUniv.nl!nick From: nick%ruly46.leidenuniv.nl (Nick Pearson) Newsgroups: comp.os.386bsd.questions Subject: Re: [Q] page fault kernel panic .. Date: 3 Feb 1995 12:26:35 GMT Organization: Leiden University, The Netherlands Lines: 34 Message-ID: <3gt7dr$pn8@highway.LeidenUniv.nl> References: <3gou26$oci@News.Simplex.NL> NNTP-Posting-Host: ruly70.leidenuniv.nl X-Newsreader: TIN [version 1.2 PL2] Rob Simons (rob@Simplex.NL) wrote: : Hiya, : I've got FreeBSD 1.1.5.1 running on a 486DX2/66 at home. Every now and : then (more now than then alas) it panics with the following messages: : fatal trap 12: page fault while in kernel mode : fault virtual address = 0xefcf5898 : fault code = supervisor read, page not present : instruction pointer = 0xf0167a33 : There's more, but I think this should be clear enough, it panics and : reboots :-( : Anyone can tell me what causes this error ? I suppose it complains : about a memory page which isn't present, is it a page in the swap area : ? What normally causes such errors ? Bad memory, bad swap disk, small : swap disk, bad motherbord, bad chip setup settings, bad wait state : settings .. what ?? : The machine has 8Mb memory and about 20% swap average. As far as I can : see the swap disk is also 8Mb big, quite small IMHO, so I'll probably : change that in dus time. : Regards, : - Rob. Try switching off the ROM BIOS and VGA BIOS caching in your BIOS setup. This alway's seems to do the trick for me !! Nick