Re: Framebuffer compression on GM45 disabled with KMS

On 3 May 2010 00:18, Tino Keitel <tino.keitel+xorg <at> tikei.de> wrote:
> On Sat, May 01, 2010 at 19:00:28 +0100, Pedro Ribeiro wrote:
>
> [...]
>
>> A follow-up: decided to revert "drm/i915: remove render reclock
>> support" on 2.6.34-rc6 (only conflicts on chunk 3 but easily solvable)
>> - I got at least 1w savings!
>
> I tried this with 2.6.33.3 on my X61s (i965). I got down to 7,3W where
> I got 7,4W before.  But I also added the kernel parameters you
> mentioned (fbpercrtc=0 powersave=1 lvds_downclock=1).  So, not sure if
> there is actually a difference compared to the old power consumption
> (the difference seems to be very small) at least on this kernel.
>
> Regards,
> Tino
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Hi Tino,

this gains have been mostly with the computer sitting idle and me not
touching it. The biggest gain (over 1w) is when I let the monitor go
off into powersaving mode. There is a clear difference here. But maybe
its just for my chipset...

As a follow-up, it is still rock-solid, and I've been torturing it
with hibernate/resume and 3D applications, VT switching, etc.

Regards,
Pedro