linux-kernel - Re: 2.6.22.1: Enabling IO-APIC = APIC error on CPU0: 40(40)

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Date:	Tue, 18 Sep 2007 00:16:31 +1100
From:	Konstantin Sharlaimov <konstantin.sharlaimov@...il.com>
To:	Justin Piszcz <jpiszcz@...idpixels.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.22.1: Enabling IO-APIC = APIC error on CPU0: 40(40)

I agree, this is probably somehow related with SiS chipset - my laptop
has one of these SiS 760 host controllers inside. 

I'll probably do some digging to figure out if this is indeed chipset
related. I wonder if this error occurs under Windows (Win does not
report much, yet it's kernel must be aware of such error).

Konstantin

On Mon, 2007-09-17 at 09:10 -0400, Justin Piszcz wrote:
> 
> On Tue, 18 Sep 2007, Konstantin Sharlaimov wrote:
> 
> > I am experiencing the similar problem on my Acer Aspire 5000 laptop -
> > once in a while a bunch of "APIC error on CPU0: 40(40)" messages are
> > showing up in dmesg.
> >
> > After few experiments and a lot of googling, I identified a cause - it
> > was my built-in wireless card! Disabling IO-APIC helped, besides a
> > single "Spurious 8259A interrupt: IRQ7" message while booting up there
> > was nothing unusual.
> >
> > A did some further experiments on various hardware and from my
> > experience I can tell that "APIC error" messages are entirely hardware
> > related.
> >
> > Regards,
> > Konstantin
> 
> Thanks for the follow-up, yeah its probably one of the Promise
> controllers or some such that is causing the problem, although I
> remmeber I used to get the error with only the motherboard, memory and
> video card, something tells me that MSI board with (SiS) chipset is
> not quite supported in Linux with APIC enabled.
> 
> Justin.
> 
> 

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