Need Advice regarding SCSI bus resets with HP9200 CD Writer

[Dave Lee]

I also had an older HP CD writer ....I can't remember what the model
was  but 
my RH6.2 system wouldn't even boot with it on the bus. It also would
cause
my adaptec win95 scsi probe to crash the system! I finally threw
it in the trash out of disgust....
-dl

Andy Kennedy wrote:
> 
> I had an old 6020i CD writer.  HP has this funky little problem of polling
> the chain.  If it is the only drive on the channel, everything is okay.
> However, if you add ANYTHING to the chain with the burner, it gets quite
> upset.  I switched to a Yamaha and had no further problems.
> 
> Anybody have any ideas if this problem is widespread throughout HP CDs?
> 
> Andy
> 
> -----Original Message-----
> From: owner-aic7xxx at FreeBSD.ORG [mailto:owner-aic7xxx at FreeBSD.ORG]On
> Behalf Of Dave Lee
> Sent: Tuesday, June 19, 2001 5:36 PM
> To: Justin T. Gibbs
> Cc: aic7xxx
> Subject: Need Advice regarding SCSI bus resets with HP9200 CD Writer
> 
> Dear Justin,
> 
> I'd like your advice on a problem I'm having with an HP9200 CD Writer.
> 
> I have been happily using a Sony Spressa CD Writer with no problems
> ...until it burned out!
> I recently replaced it with the HP 9200.
> 
> The HP9200 is operational but provokes my SCSI bus to reset in an,
> apparently, intermittent manner.
> 
> The problem always occurs with a time-out while the system is trying to
> access my hard drive:
> .....
> scsi : aborting command due to time-out : pid 36182, scsi0, channel 0,
> id 0, lun 0 Read (10) 00 00 6f ba 78 00 00 80 00
> SCSI host 0 abort (pid 36180) timed out - resetting
> ....
> When the HP9200 is removed from the buss everything works fine.
> 
> I've attached 2 files showing my SCSI boot log and kernel error
> messages.
> My system is an Intel DK440LX (Dakota) motherboard with AIC7895 and
> pentium II 333 and 256MB RAM.
> I'm running RedHat 6.2 (Kernel Ver: 2.2.14-5.0) "out of the box" (no
> upgrades or patches).
> 
> Before I entangle myself with patching the kernel and the AIC78xx driver
> I'd like to know your opinion on
> what the chances are that this will solve the problem.  If there is a
> great deal of uncertainty I'll
> just go looking for another Sony Spressa...
> 
> Thanks Very Much for your time,
> 
> Best Regards,
> -Dave Lee
>    (Linux dilettante)

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