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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.rmit.EDU.AU!news.unimelb.EDU.AU!munnari.OZ.AU!news.hawaii.edu!news.uoregon.edu!arclight.uoregon.edu!gatech!newsfeed.internetmci.com!in2.uu.net!en.com!multiverse!ragnarok.oar.net!malgudi.oar.net!hyperion.wright.edu!echoes.wittenberg.edu!bob.wittenberg.edu!mandrews From: mandrews@bob.Wittenberg.EDU (Mike Andrews) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: Adaptec 2940UW lockup problem Date: 1 May 96 19:30:39 GMT Organization: Wittenberg University, Springfield OH Lines: 32 Message-ID: <mandrews.830979039@bob.wittenberg.edu> References: <mandrews.830434944@bob.wittenberg.edu> <4m2ub2$apq@news.zipnet.net> NNTP-Posting-Host: bob.wittenberg.edu X-Newsreader: NN version 6.5.0 #8 (NOV) mi@aldan.algebra.com (Mikhail Teterin) writes: >Honorable Mike Andrews > wrote on 25 Apr (in article <mandrews.830434944@bob.wittenberg.edu>): >=Note that the controller is wide, but all the current devices are narrow... >= >=The problem is that the machine siezes up tight during some SCSI activity. >=No kernel message/panic, nada, just frozen system, keyboard, only way out >=is the Reset button. Out of the box, I couldn't even complete a newfs on >=a disk without it crashing. I went into the SCSI BIOS and disabled the >=>1GB translation, and things improved greatly, but not completely. Now it >Is machine's BIOS aware of disks at all? It should not be (should say >not-installed)... I have the BIOS disabled (as far as reserving space in the 640K-1M range), but I have found a workaround for my problem, or at least it seems to work: By default, there is a BIOS setting for synchronous transfer rates, and it's set to 20MB/sec for each target. Setting this down to 10MB/sec, which is I think all a narrow drive can handle anyway, SEEMS to solve the problem. I'd assumed that FreeBSD would ignore all the BIOS settings and just auto- negotiate all those nasty things, but that isn't what the kernel sources seem to indicate. Oops. :) Can anyone verify this as a solution? -- -- Mike Andrews - mandrews@wittenberg.edu - mandrews@termfrost.org (NeXT) -- Programmer/Analyst, webmaster/netnews guy, Wittenberg Univ, Springfield OH -- http://www.termfrost.org/~mandrews/ "Don't get even, get odd..."