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From: Bruce Evans <bde@zeta.org.au>
Subject: Re: kern/59732: acpi causes boot to hang
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The following reply was made to PR kern/59732; it has been noted by GNATS.

From: Bruce Evans <bde@zeta.org.au>
To: "Samuel J. Greear" <sjg@evilcode.net>
Cc: freebsd-gnats-submit@FreeBSD.org
Subject: Re: kern/59732: acpi causes boot to hang
Date: Sat, 27 Dec 2003 21:18:57 +1100 (EST)

 On Fri, 26 Dec 2003, Samuel J. Greear wrote:
 
 >  Same problem here, confirmed with Dec. 26 build.   NForce2 Ultra chipset.
 >  Only my box seems to make it a bit further, init gets launched prior to
 >  hardlock. Considering the popularity of this platform unless this problem is
 >  isolated to a few motherboards I would consider this a potential
 >  show-stopper.  Pass some ACPI clue this way and I'll do what I can.
 
 Configuring the apic causes interrupt storms on all (?*) interrupts
 on an ASUS A7N8X-E with Nforce2.  Workarounds are to not configure the
 apic or to not configure acpi since not configuring acpi breaks use
 of the apic due to a nonexistent or wrong mptable (it's not an SMP
 motherboard).
 
 (*) The first time I looked, the storms seemed to be only on pci
 interrupts.  Later, they seemed to be weirder -- even npx0 got endless
 interrupts, but at a much lower frequency than pci interrupts.
 
 Bruce