* AMD Cool'n'Quiet
@ 2004-02-02 3:00 Richard Smith
[not found] ` <Pine.LNX.4.53.0402020255001.21219-ZITK3WZmtajxsQirvqX5VLrBFzj/CAxj@public.gmane.org>
0 siblings, 1 reply; 3+ messages in thread
From: Richard Smith @ 2004-02-02 3:00 UTC (permalink / raw)
To: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f
If I buy an AMD Athlon 64 CPU and an appropriate motherboard, will the
Cool'n'Quiet feature work on Linux? (This throttles down the CPU to
reduce power consumption when idle.) I know Windows requires special
drivers. Is it handled by ACPI on Linux?
--
Richard
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: AMD Cool'n'Quiet
[not found] ` <Pine.LNX.4.53.0402020255001.21219-ZITK3WZmtajxsQirvqX5VLrBFzj/CAxj@public.gmane.org>
@ 2004-02-02 10:08 ` Andi Kleen
2004-02-02 11:42 ` Ducrot Bruno
1 sibling, 0 replies; 3+ messages in thread
From: Andi Kleen @ 2004-02-02 10:08 UTC (permalink / raw)
To: Richard Smith; +Cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f
On Mon, 2 Feb 2004 03:00:31 +0000 (GMT)
Richard Smith <spam_if_you_want_to-/E1597aS9LT10XsdtD+oqA@public.gmane.org> wrote:
> If I buy an AMD Athlon 64 CPU and an appropriate motherboard, will the
> Cool'n'Quiet feature work on Linux? (This throttles down the CPU to
> reduce power consumption when idle.) I know Windows requires special
> drivers. Is it handled by ACPI on Linux?
It's handled by an own cpufreq driver (powernow-k8) independent of ACPI
and works. However it requires a correct PST table from the BIOS, which is often
not there. You also need to run cpufreqd.
-Andi
-------------------------------------------------------
The SF.Net email is sponsored by EclipseCon 2004
Premiere Conference on Open Tools Development and Integration
See the breadth of Eclipse activity. February 3-5 in Anaheim, CA.
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: AMD Cool'n'Quiet
[not found] ` <Pine.LNX.4.53.0402020255001.21219-ZITK3WZmtajxsQirvqX5VLrBFzj/CAxj@public.gmane.org>
2004-02-02 10:08 ` Andi Kleen
@ 2004-02-02 11:42 ` Ducrot Bruno
1 sibling, 0 replies; 3+ messages in thread
From: Ducrot Bruno @ 2004-02-02 11:42 UTC (permalink / raw)
To: Richard Smith; +Cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f
On Mon, Feb 02, 2004 at 03:00:31AM +0000, Richard Smith wrote:
> If I buy an AMD Athlon 64 CPU and an appropriate motherboard, will the
> Cool'n'Quiet feature work on Linux? (This throttles down the CPU to
> reduce power consumption when idle.) I know Windows requires special
> drivers. Is it handled by ACPI on Linux?
>
This work with CPUFreq (there is also effort in order to retrieve
configuration from ACPI).
Cheers,
--
Ducrot Bruno
-- Which is worse: ignorance or apathy?
-- Don't know. Don't care.
-------------------------------------------------------
The SF.Net email is sponsored by EclipseCon 2004
Premiere Conference on Open Tools Development and Integration
See the breadth of Eclipse activity. February 3-5 in Anaheim, CA.
http://www.eclipsecon.org/osdn
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2004-02-02 3:00 AMD Cool'n'Quiet Richard Smith
[not found] ` <Pine.LNX.4.53.0402020255001.21219-ZITK3WZmtajxsQirvqX5VLrBFzj/CAxj@public.gmane.org>
2004-02-02 10:08 ` Andi Kleen
2004-02-02 11:42 ` Ducrot Bruno
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