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Date:      Tue, 18 Nov 2003 22:34:46 -0000
From:      Don Lewis <truckman@FreeBSD.org>
To:        nate@root.org
Cc:        current@FreeBSD.org
Subject:   Re: Updated acpi_cpu patch
Message-ID:  <200311182234.hAIMYaeF091626@gw.catspoiler.org>
In-Reply-To: <20031118142911.M65367@root.org>

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On 18 Nov, Nate Lawson wrote:
> On Tue, 18 Nov 2003, Don Lewis wrote:
>> On 18 Nov, Lukas Ertl wrote:
>> > On Tue, 18 Nov 2003, Nate Lawson wrote:
>>
>> >> This excerpt from truckman@'s asl shows that 4 Cx states are only
>> >> available when the AC adapter is not attached.  (The C*NA memory addresses
>> >> appear to be managed by the BIOS and not the AML but the PSR access is
>> >> clear).
>> >
>> > This part of the ASL looks the one here - let me guess, is it a ThinkPad?
>> > :-)
>>
>> Yup, a Thinkpad R40, which refuses to actually power down in ACPI mode
>> when I run "shutdown -p".
> 
> That's an old problem that Linux is also trying to work around.  It
> appears to be buggy hw.

I wonder how Windoze does it ...



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