Date: Fri, 19 Mar 1999 08:08:00 +0100 (CET) From: Oliver Fromme <olli@dorifer.heim3.tu-clausthal.de> To: freebsd-scsi@FreeBSD.ORG Subject: Re: Boot-time scsi probe problem Message-ID: <199903190708.IAA19515@dorifer.heim3.tu-clausthal.de>
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Kenneth D. Merry wrote in list.freebsd-scsi:
> Jason K. Fritcher wrote...
> > [...]
> > Ctrl-Alt-Del, the system will lockup when it tries to probe the scsi bus for
> > devices. It will wait the 15 seconds for things to settle, and then it locks
> > one the probe starts. I am forced to use the reset button to restart it.
> >
> > The hardware I have ia an Asus P2B-LS motherboard with onboard AIC-7890 SCSI
> > controller + 3860 bridge.
>
> This sounds and looks like a known problem with the Adaptec 7890 chips. A
> number of people have reported this.
Including me...
By the way, I can _reliably_ reproduce the problem when I
increase the "PCI latency" in the BIOS setup from 32 (the
default) to 64. It _always_ locks up then after waiting
for the SCSI devices to settle.
So I set it back to 32 -- with that setting, it locks up
only sometimes, but not always. Maybe there's a setting
with which it will always work, but finding that out by
pure experimentation would be very time consuming (and I
don't really have a clue what that "PCI latency" means,
and what things could break if I play with it).
When booting in verbose mode, it also prints some error
messages. Would those be helpful for the developers? If
so, I can set it to 64 again to reproduce the problem and
write all that stuff down. Just let me know.
Regards
Oliver
--
Oliver Fromme, Leibnizstr. 18/61, 38678 Clausthal, Germany
(Info: finger userinfo:olli@dorifer.heim3.tu-clausthal.de)
"In jedem Stück Kohle wartet ein Diamant auf seine Geburt"
(Terry Pratchett)
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