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SubjectRe: Bug Report for Linux Kernel 3.x
On Tue, Aug 23, 2011 at 07:19:35PM -0400, Steevven1 wrote:
> Hello,
>
> I would like to report what myself and several others believe to be a
> serious bug affecting all Linux kernels 3.0 and up, and none below 3.0
> (2.6.x and lower).
>
> One-sentence description: On certain hardware, the 3.x series kernels
> drain a considerable amount more power than the 2.6-series kernels, up
> to 40% more, even when idle.
>
> The specific hardware I have personally tested is a Lenovo ThinkPad
> X220 with an Intel SandyBridge i7 2620M processor.

Sounds like https://bugzilla.redhat.com/show_bug.cgi?id=727579
Try booting with i915.i915_enable_rc6=1

Dave



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