kern/59732: acpi causes boot to hang

Bruce Evans bde at
Sat Dec 27 02:20:25 PST 2003

The following reply was made to PR kern/59732; it has been noted by GNATS.

From: Bruce Evans <bde at>
To: "Samuel J. Greear" <sjg at>
Cc: freebsd-gnats-submit at
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
 (*) 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.

More information about the freebsd-bugs mailing list