[Bug 48791] i915 doesn't reach RC6 state after s2ram - Thinkpad T420, X220

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=48791





--- Comment #17 from Toralf Förster <toralf.foerster at gmx.de>  2013-02-01 17:39:36 ---
FWIW I tried this (for 3.7.6 queued) patch :

https://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git;a=blob;f=queue-3.7/drm-i915-fix-forcewake-posting-reads.patch;h=72ec3dc35e5fa46d38e73beac8a3f868ec92418d;hb=dead61ec5305d9c2aa485da37012aea4762d41d7

applied on top of 3.7.5 at a stable Gentoo but w/o success. 

Even more with 3.7.5 I do now run into this issue at nearly every boot phase
and after s2disk (however not after s2ram)

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