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Re: CPU power management

On Mon, Feb 05, 2007 at 01:23:42PM +0200, Eddy Petri??or wrote:
> Frank Ursel wrote:
>> On So, Feb 04, 2007 at 07:41:30 +0100, Mike Hommey wrote:
>>> max_cstate is also C8, but I only have 2 C-states when on AC power,
>>> and 2 more C-states show up when on battery. I don't think you have to
>>> worry.
>> Thanks. On my system there is no difference between AC or battery. Every
>> time three C-states show up. As I found out, I'm not the only one how is
>> curios about the missing states and somewhere I read that it is the
>> vendors choice of how many C-states are reported and supported on an
>> laptop. So, lets wait and see. :-)
> On a side note, I have found out that FreeBSD is able to bring down the
> processor speed of a Pentium M processor on a laptop of a friend a LOT
> lower than what Linux is able to do (200MHz as opposed to 800MHz in Linux).
> I am wondering if the information is correct. I thought of installing

Me too. And [1] says something about it for Linux.



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