[Intel-gfx] Framebuffer compression on GM45 disabled with KMS
pedrib at gmail.com
Fri Apr 30 17:01:12 PDT 2010
On 1 May 2010 00:06, Jesse Barnes <jbarnes at virtuousgeek.org> wrote:
> On Fri, 30 Apr 2010 13:04:23 +0100
> Pedro Ribeiro <pedrib at gmail.com> wrote:
>> Hi all,
>> My Xorg.log shows
>> (**) intel(0): Kernel mode setting active, disabling FBC.
>> (**) intel(0): Framebuffer compression disabled
>> Is this normal? I'm trying to lower power consumption for my laptop...
>> Enabling FBC should do it?
>> I have
>> enabled on the i915 module.
> It's just a stale message, I'll remove it. FBC will be enabled by your
> kernel if possible (you can check /sys/kernel/debug/dri/0/ for status
> info if you have debugfs mounted).
Thanks for the heads up, actually measuring the power consumption
between KMS and UMS with FBC enabled it seems that KMS wins by a very
Its a great job you guys are doing with this driver!
I see it improve steadily on every kernel release. The only things I
still miss is the render reclock support which was removed in 22.214.171.124
- it worked wonderfully in my machine, reducing power consumption by
2w when idle; and multiple ring buffer support(for libva H.264) which
seems to be coming in the Q3 this year :-)
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