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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!news.ecn.uoknor.edu!qns3.qns.net!imci4!newsfeed.internetmci.com!news.jaguNET.com!confucius.omniscient.com!emerys From: emerys@confucius.omniscient.com (Sean Emery) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: Strange new errors with 32mb upgrade Date: 17 Jul 1996 15:30:01 GMT Organization: jaguNET Access Services Lines: 39 Message-ID: <4sj0tp$3a7@skydiver.jaguNET.com> References: <4sbhat$q7c@skydiver.jaguNET.com> NNTP-Posting-Host: confucius.jagunet.com X-Newsreader: TIN [version 1.2 PL2] Sean Emery (emerys@confucius.omniscient.com) wrote: : Hello all, I have been getting several strange effects after adding some : memory to my system. (total of 48mb now.) : First thing I noticed is that vi (and it's derivitives nvi, etc.) and talk : would core dump upon invocation. reboot fixed. : Second thing, find command always produced a bus error. Reboot fixed. : Third thing, a 'du' locked up my system and necessitated manual fsck'ing : upon reboot. : Fourth thing, X sometimes exits prematurely with a buserror or segfault. : Not usually on its own, though, when I've done something (new window or : something) to upset it. After this happens, X exits almost immediately : with the same error when restarted (until reboot, of course.) : Fifth thing, have rebooted my machine left the room to get a coke and : returned to find it rebooting again... weird, huh? : I bought 2 4x32mb simms (rated at 60ns although I use them at 70) and : added them to the four 4MB sims that I already had. Is this the : possible effects of defective RAM? or should I recompile the kernel with : the option of more than 32 MB of memory or something like that. Well, someone mailed me with a suggestion to check out 'bounce buffer'ing that FreeBSD does to help insure that DMA ISA cards (maybe SCSI) aren't conflicting with the fact that I have more than 16mb of memory. In response, the only ISA card that I have is an 8bit SoundblasterPro. I do have a SCSI card, NCR825 PCI. The 'handbook' is very terse concerning these 'bounce buffers', so if anyone has more insight, I'd be surely thankful for the info or pointer where I can find more info. Thanks again, Sean Emery emerys@confucius.jagunet.com