linux-kernel - Re: 2.6.21-rc5-mm2 -- ACPI problems (lid switch broken, always shows running from AC, plugging in AC hangs machine)

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Date:	Fri, 30 Mar 2007 15:30:10 -0700
From:	"Miles Lane" <miles.lane@...il.com>
To:	"Len Brown" <lenb@...nel.org>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, linux-acpi@...r.kernel.org
Subject: Re: 2.6.21-rc5-mm2 -- ACPI problems (lid switch broken, always shows running from AC, plugging in AC hangs machine)

On 3/30/07, Len Brown <lenb@...nel.org> wrote:
> On Thursday 29 March 2007 17:49, Miles Lane wrote:
> > Hmm.   I've reproduced these problems with vanilla 2.6.21-rc5, so the
> > latest acpi-git changes are off the hook....
>
> I think the 1st message on this thread holds the answer:
>
> > ACPI: BIOS bug: multiple APIC/MADT found, using 2
> > ACPI: If "acpi_apic_instance=0" works better, notify linux-acpi@...r.kernel.org
>
> Looking at your acpidump in
> http://bugzilla.kernel.org/show_bug.cgi?id=8283
> clearly the 2nd table is broken (it is missing the SCI override)
> and that is why you get no ACPI interrupts.
>
> If Windows works on your machine -- ACPI events such as power button etc --
> then that is proof that Windows doesn't use the 2nd MADT and I need
> to revert 09fe58356d148ff66901ddf639e725ca1a48a0af

Yes, the patch you sent fixes these problems.

Thanks!
       Miles
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