Updated acpi_cpu patch

Don Lewis truckman at FreeBSD.org
Tue Nov 18 14:34:46 PST 2003


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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