From: Con Kolivas <kernel@kolivas.org>
To: linux-kernel@vger.kernel.org
Subject: Re: broadcom 5752 in HP dc7600U works on 2.6.13 but does not working on 2.6.16
Date: Mon, 22 May 2006 21:14:11 +1000
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Cc: Andrew Morton <akpm@osdl.org>, Barry Scott <barry.scott@onelan.co.uk>
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On Monday 22 May 2006 20:59, Andrew Morton wrote:
> It appears that the 2.6.13 kernel did not bring up the machine's io-APICs,
> but 2.6.16 did.  However you are receiving eth0 interrupts on 2.6.16 so
> perhaps that's not relevant.

It looks like he's _not_ receiving eth0 interrupts if I'm not mistaken?

The lower one with apic presumably is 2.6.16


>  10:        130          XT-PIC  eth0

>  16:          0   IO-APIC-level  eth0

and this:

> ENABLING IO-APIC IRQs
> ..TIMER: vector=0x31 apic1=-1 pin1=-1 apic2=-1 pin2=-1
> ...trying to set up timer (IRQ0) through the 8259A ...  failed.
> ...trying to set up timer as Virtual Wire IRQ... works.

looks suspiciously like a broken apic/code/workaround/whatever

I'd go with Andrew's suggestion and disable apic in your bootparameters 
(noapic and/or nolapic) and possibly in your config if it corrects it

-- 
-ck
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