Return to BSD News archive
Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.mira.net.au!otis.apana.org.au!serval.net.wsu.edu!netnews.nwnet.net!oracle.pnl.gov!osi-east2.es.net!lll-winken.llnl.gov!sol.ctr.columbia.edu!howland.reston.ans.net!spool.mu.edu!caen!usenet.coe.montana.edu!bsd.coe.montana.edu!nate From: nate@bsd.coe.montana.edu (Nate Williams) Newsgroups: comp.os.386bsd.questions Subject: Re: FreeBSD 2.0 problem: uha0:1:1 (sd1) timed out AGAIN; cdrom hung hard Date: 4 Jan 1995 18:04:55 GMT Organization: Montana State University, Bozeman Montana Lines: 32 Message-ID: <3eeo07$l3g@pdq.coe.montana.edu> References: <1995Jan3.225714.25341@slate.mines.colorado.edu> NNTP-Posting-Host: bsd.coe.montana.edu Keywords: uha0 cdrom timed In article <1995Jan3.225714.25341@slate.mines.colorado.edu>, David G. Beausang <dgb@Mines.Colorado.EDU> wrote: >FreeBSD 2.0 problem: uha0:1:1 (sd1) timed out AGAIN; cdrom hung hard > >Summary: >Any prolonged CD-ROM access hangs system with the error message "uha0:1:1 >(sd1) timed out AGAIN". How is the system 'wired'? Basically, as with all problems of this kind I suspect hardware termination. Is your CD internal, and do you have termination on only *one* SCSI device which is the last device? If it's external, did you remove the termination on your SCSI board and terminate the CD? Are your cables too short, or do they have bad connectors? >Both the Walnut and InfoMagic FreeBSD 2.0 CD-ROMs and some other ISO9660 >CD-ROM (which I don't remember) hung. I verified that these CD-ROMs were >readable under both DOS and Linux without problems. Saying it works under DOS doesn't necessarily mean anything, and it's possible that the Linux drivers doesn't use the devices as 'hard' as the FreeBSD driver. Basically, termination problems might not show up until the system is used heavily enough to cause 'reflections' to wipe out good date on the wire. Nate -- nate@FreeBSD.org | FreeBSD core member and all around tech. nate@schizo.coe.montana.edu | weenie. work #: (406) 994-5980 | Got lots of offers for work, now I need to home #: (406) 586-0579 | decide which job to take. :)