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Date: Thu, 19 Mar 2009 11:01:22 +0100
From: Ingo Molnar <mingo@elte.hu>
To: Christopher Schramm <debian@shakaweb.org>, Yinghai Lu <yinghai@kernel.org>,
       "Maciej W. Rozycki" <macro@linux-mips.org>,
       Thomas Gleixner <tglx@linutronix.de>, "H. Peter Anvin" <hpa@zytor.com>
Cc: linux-kernel@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>
Subject: Re: APIC problem report
Message-ID: <20090319100122.GA30358@elte.hu>
References: <49C1FE7D.9070605@shakaweb.org>
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* Christopher Schramm <debian@shakaweb.org> wrote:

> Hi,
>
> I found a problem with APIC on a desktop PC equipped with Asus' 
> M2N, running the manufacturer's AMI BIOS - version 0803.
>
> I've tried booting Knoppix 5.3.1 (Kernel 2.6.24.4) and GParted 
> live (Debian's 2.6.26-13). Both will only boot if noapic parameter 
> is used. Otherwise I get "MP-BIOS bug: 8254 timer not connected to 
> IO-APIC" resulting in a kernel panic.
>
> apic=debug gives "ACPI: Core revision 20080321", "Version 
> 80050010" (twice), "ID: 0", "LVT0: 700", "LVT1:400" and "ESR value 
> before enabling vector: 0x00000004 after: 0x00000000".
>
> Hope it's of some use (and the best place to report it)

Any chance to build and run a more recent kernel on it, to see 
whether this issue still occurs? The latest APIC code is at:

  http://people.redhat.com/mingo/tip.git/README

And i suspect you should pick up the Knoppix .config and build with 
that to reproduce this issue. A digital picture of the panic would 
be useful as well.

	Ingo