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Date:      Wed, 4 Sep 2002 20:58:18 +0300
From:      Esa Karkkainen <ekarkkai@pp.htv.fi>
To:        freebsd-questions@freebsd.org
Subject:   Random SCSI bus resets etc
Message-ID:  <20020904175818.GA328@pp.htv.fi>

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Hello

	Please CC: me because I'm not subscribed to questions.

	I get these errors while, for example, compiling world, or
compiling mozilla and mozilla-devel at the same time. Can anyone tell
me what is causing these errors? Bad termination? Faulty cables, disk
drives?

	Error messages cut&pasted from xconsole

sym0:1: ERROR (0:c) (8-0-0) (f/9f) @ (scripta 5f0:11000f90).
sym0: script cmd = 11000000
sym0: regdump: da 00 c0 9f 47 0f 01 02 9a 08 81 00 80 00 08 0a 00 e4 bc 0c 00 ff ff ff.
(noperiph:sym0:0:-1:-1): SCSI BUS reset detected.
sym0: unexpected disconnect
sym0: unexpected disconnect
sym0:0: No MSG OUT phase after selection with ATN.
(noperiph:sym0:0:-1:-1): SCSI BUS reset detected.

I have these SCSI devices on Tekram DC-390U2W SCSI controller.

http://www.tekram.com/hot_products.asp?Product=DC-390U2_Series

sym0: <895> port 0xe800-0xe8ff mem
0xda102000-0xda102fff,0xda100000-0xda1000ff irq 15 at device 16.0 on pci0
sym0: Tekram NVRAM, ID 7, Fast-40, LVD, parity checking

sa0 at sym0 bus 0 target 3 lun 0
sa0: <Quantum DLT4000 CD4B> Removable Sequential Access SCSI-2 device 
sa0: 10.000MB/s transfers (10.000MHz, offset 15)

da1 at sym0 bus 0 target 1 lun 0
da1: <COMPAQ BB00921B91 3B05> Fixed Direct Access SCSI-2 device 
da1: 80.000MB/s transfers (40.000MHz, offset 15, 16bit), Tagged Queueing Enabled
da1: 8678MB (17773524 512 byte sectors: 255H 63S/T 1106C)

da0 at sym0 bus 0 target 0 lun 0
da0: <IBM DDRS-39130D DC1B> Fixed Direct Access SCSI-2 device 
da0: 80.000MB/s transfers (40.000MHz, offset 15, 16bit), Tagged Queueing Enabled
da0: 8715MB (17850000 512 byte sectors: 255H 63S/T 1111C)

cd0 at sym0 bus 0 target 2 lun 0
cd0: <PLEXTOR CD-ROM PX-32TS 1.01> Removable CD-ROM SCSI-2 device 
cd0: 20.000MB/s transfers (20.000MHz, offset 15)

	Tape drive and CD-ROM drive are on the narrow/non LVD connector
and the disk drives are on the wide/LVD connector.

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