[Bug 111623] No package C-states on Dell XPS 15 9570 after resume from deep sleep

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111623

--- Comment #21 from Don Hiatt <don.hiatt at intel.com> ---
(In reply to Tomas Janousek from comment #20)
> Turns out I can reproduce this with i915/kbl_guc_ver9_39.bin +
> i915/kbl_huc_ver02_00_1810.bin...
> 
> Anyway, it seems that on this Kaby Lake system, loading HuC without GuC
> submission leads to the GPU not entering rc6 and thus keeping the package
> out of C-states. Obviously then it doesn't matter what GuC version it is, be
> it 9.39 or 32.0.3 or whatever.

Pretty much what I concluded, I just posted this for review, can you give it a
try? Thanks. 

https://patchwork.freedesktop.org/patch/337552/

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