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Date: Sat, 25 Oct 1997 11:00:01 -0700 (PDT)
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From: "Justin T. Gibbs" <gibbs@plutotech.com>
Subject: Re: kern/4851: adaptec 2940U hangs system if scsi tape device attached 
Reply-To: "Justin T. Gibbs" <gibbs@plutotech.com>
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The following reply was made to PR kern/4851; it has been noted by GNATS.

From: "Justin T. Gibbs" <gibbs@plutotech.com>
To: lmc@chpc.utah.edu
Cc: freebsd-gnats-submit@FreeBSD.ORG
Subject: Re: kern/4851: adaptec 2940U hangs system if scsi tape device attached 
Date: Sat, 25 Oct 1997 11:51:55 -0600

 >>Description:
 >If scsi tape device:
 > "EXABYTE EXB8500C8CQANXR4 0730" type 1 removable SCSI 2
 >attached to adaptec 2940U:
 > ahc0 <Adaptec 2940 Ultra SCSI host adapter> rev 0 int a irq 9 on pci0:16
 > ahc0: aic7880 Single Channel, SCSI Id=7, 16 SCBs
 >the console shows the following:
 >
 >sd0(ahc0:0:0): SCB 0x1 - timed out in dataout phase, SCSISIGI == 0x4
 >SEQADDR = 0x12c SCSISEQ = 0x12 SSTAT0 = 0x0 SSTAT1 = 0x2
 
 This looks suspiciously like a cabling or termination problem.  Set
 the termination manually in SCSI-Select instead of relying on 
 auto-termination.  You should also upgrade to a later revision of the
 driver (as in 2.2-stable) since there have been many bug fixes since
 2.2.2R was released.
 
 --
 Justin T. Gibbs
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