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Date:      Sat, 27 Sep 2003 01:45:17 -0600
From:      Patrick C <patrick@filespanker.com>
To:        Jorge Aldana <jorge@salk.edu>
Cc:        freebsd-stable@FreeBSD.ORG
Subject:   Re: psm0 lockup on boot (FreeBSD 4.9 PreRelease #2)
Message-ID:  <200309270145.17468.patrick@filespanker.com>
In-Reply-To: <20030926124237.V63137@axelrod.salk.edu>
References:  <20030926142330.18488.qmail@web12008.mail.yahoo.com> <1064592064.20158.16.camel@pzhang> <20030926124237.V63137@axelrod.salk.edu>

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> I lost the previous thread on the psm0 lock but also wanted to report that
> after cvsup-ing for the arp patch and rebuilding that the lockup still
> occurs, any leads on a fix/workaround? (Besides removing psm0 or disabling
> the sound card).

I had the same problem where my kernel would lock up until I changed the 
soundcard PCI slot -- as well as my network card -- and assigned irqs to each 
of those slots and my video card. This appears to be because of irq 
conflicts. Here's what I found this in the LINT file:

# Note: It has been reported that ISA DMA with the SoundBlaster will
# lock up the machine (PR docs/5358).  If this happens to you,
# turning off USWC write posting in your machine's BIOS may fix
# the problem.

That fixed it for me.


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