Re: [PATCH v2] acpi: Fix regression where _PPC is not read at booteven when ignore_ppc=0

[Matthew Garrett]

On Wed, Apr 29, 2009 at 02:39:31PM -0700, Darrick J. Wong wrote:

> I don't know about XP's copy of intelppm.sys, but this would seem to confirm
> that WS03 and WS08 check _PPC at boot time.

Ok, so that makes things interesting. From what we know about the T60 
(and based on Ingo's report), _PPC may evaluate to 2 on bootup. However, 
if this is ignored then later notifications are correct. This implies 
that Windows either ignores the initial evaluation or does something 
that triggers a notification.

The only notifications appear to be sent from event methods, so there's 
nothing obvious there that we can trigger. I'm actually quite confused 
by this now. Ingo, if you re-add that block, does your system stop 
working again?

-- 
Matthew Garrett | mjg59@xxxxxxxxxxxxx
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