[Intel-gfx] [PATCH 2/2] drm/i915: re-enable rc6 by default

Jesse Barnes jbarnes at virtuousgeek.org
Mon Nov 14 22:22:37 CET 2011


On Mon, 14 Nov 2011 18:39:15 -0200
Eugeni Dodonov <eugeni.dodonov at intel.com> wrote:

> Most of the rc6-related hangs and major issues were addressed for the past
> months.
> 
> Let's re-enable it by default to provide a more wider testing, and catch
> the remaining problems.
> 
> According to tests, enablement of rc6 results in up to +50% improvements
> in power usage and battery life, so it certainly would be a nice feature
> to have enabled by default.
> 
> Also, most of the issues related to rc6 seem to came from VTd, so if you
> are experiencing any problems with it, try disabling VTd in bios or using
> intel_iommu=off kernel parameter to investigate whether it solves the
> issue.

Yes please.

Acked-by: Jesse Barnes <jbarnes at virtuousgeek.org>

-- 
Jesse Barnes, Intel Open Source Technology Center
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