On Tue, 2007-04-24 at 08:10 +0200, Sven Anders wrote:
> 
> 2. As far as I remember, the MacBook is very similar to the MacBook Pro in
>    the hardware it's using. The main difference is the GPU.
>    How long does the battery of the MacBook under Linux last in comparison to
>    MacOS X?
>    If it's a small difference, so our problem is the power consumption of
>    the ATI GPU (assuming the Intel-GPU draws as less power under Linux as it
>    does under MacOSX). On the MacBook we have the advantage, that it's an
>    open-source driver.
>    If the power drain is as bad as on the MacBook Pro (and we checked the
>    Intel-GPU driver, that is's using all power-saving states available),
>    the problem lies somewhere else...

AFAICT the xf86-video-intel driver only has rudimentary power management
code, mostly powering down unused output components. However, the
integrated graphics core probably has significantly lower maximum and
average power consumption than discrete parts to begin with.


Hope this helps,


-- 
Earthling Michel Dänzer           |          http://tungstengraphics.com
Libre software enthusiast         |          Debian, X and DRI developer


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