RE: Centrino question

Nakajima, Jun
2004-05-21T18:08:49Z

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To get longer battery life, you need to use P-state transitions via
Enhanced SpeedStep as well.

Jun
>-----Original Message-----
>From: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org [mailto:acpi-devel-
>admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org] On Behalf Of Ow Mun Heng
>Sent: Friday, May 21, 2004 10:39 AM
>To: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
>Subject: Re: [ACPI] Centrino question
>
>On Fri, 2004-05-21 at 04:52, Karol Kozimor wrote:
>> Thus wrote Cyril Wattebled:
>> > However, I don't understand, I was told that the centrino processor
and
>chipset
>> > supports C3 and even C4.
>
>C3 is Supported
>
>
>active state: C2
>default state: C1
>bus master activity: ffffffff
>states:
> C1: promotion[C2] demotion[--] latency[000] usage[01028830]
> *C2: promotion[C3] demotion[C1] latency[050] usage[04785987]
> C3: promotion[--] demotion[C2] latency[050] usage[00001327]
>
>This is a Dell D600 1.4g. c3 values are low because I have the USB
mouse
>on right now. (note the fffffff??)
>
>I've tested it with and w/o C3. The difference in the battery lifetime
>was only very minmal. I got like maybe 10 mins extra.
>
>I last 2:30 on Linux and 3h on Windows.
>
>Batt Life Sucks..
>
>
>
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