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Path: sserve!newshost.anu.edu.au!munnari.oz.au!news.Hawaii.Edu!ames!skates.gsfc.nasa.gov!nasahq!lupine.nsi.nasa.gov!mnewell Newsgroups: comp.os.386bsd.questions Subject: Re: Question about Hanging Kernel Message-ID: <1993Jun15.121806.450@nhqvax.hq.nasa.gov> From: mnewell@lupine.nsi.nasa.gov. (Mike Newell) Date: 15 Jun 93 12:18:06 +0600 Reply-To: mnewell@lupine.nsi.nasa.gov. References: <1993Jun15.132852.18348@news.weeg.uiowa.edu> Distribution: world Organization: Sun Microsystems Nntp-Posting-Host: lupine.nsi.nasa.gov Lines: 38 In article 18348@news.weeg.uiowa.edu, jboggs@umaxc.weeg.uiowa.edu (John D. Boggs) writes: >From article <1vjmgr$50t@stimpy.css.itd.umich.edu>, by altitude@css.itd.umich.edu (Alex Tang): >> Hi. I've got some more information...It has happened two or three times in >> the last 2 days where I've su'ed and when entering the passwd, it'll hang. If >> I ping the machine, It'll respond as alive. If I telnet to it, it will say >> connection established, then just sit there. This is getting annoying, I go >> running in to reboot my machine, and then by the time I walk home, I will >> login and the first command will hang it. >> thanx...alex... > >Mine tends to hang when cd'ing after su'ing. I goes like this: > >% su bin >Password: <A very important, toptoptop secret phrase> >erato# cd /usr/local/src >[Hard disk light on, characters echo but no response, gotta reboot] > I've had the same problem on my system; in my case it appears to be a SCSI bus problem. I have two internal drives connected via a 2' ribbon cable, and one external drive connected via a 4' centronics-like cable. I've got an Adaptec 1542B host adaptor. When I added another external (CD-ROM) drive to the chain I couldn't even boot... I've minimized the problem by adding a pass-through type terminator at the system bulkhead connector. It doesn't hang anymore with the external drive, however if I add the CD-ROM back into the chain it will hang after 10-15 minutes of heavy drive usage. I can live with that... Someone has suggested using an active terminator on the bus and checking the power. I have done so, and still have the problem. Maybe the Adaptec is really finiky?? Mike Newell NASA Advanced Network Applications Group