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 14:10:43 -0400
From:	Len Brown <lenb@...nel.org>
To:	"Miles Lane" <miles.lane@...il.com>
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 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

thanks,
-Len
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