It's a github comment so pretty hopeless to follow up with the reporter, but it sounds like we have a culprit for the ilk wm issues/fifo underruns.
-Daniel---------- Forwarded message ----------
From: Manfred G Kitzbichler <notifications@xxxxxxxxxx>
Date: Sat, Jan 30, 2016 at 5:42 AM
Subject: Re: [linux] drm/i915: Eliminate usage of plane_wm_parameters from ILK-style WM code (v2) (43d59ed)
To: torvalds/linux <linux@xxxxxxxxxxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
From: Manfred G Kitzbichler <notifications@xxxxxxxxxx>
Date: Sat, Jan 30, 2016 at 5:42 AM
Subject: Re: [linux] drm/i915: Eliminate usage of plane_wm_parameters from ILK-style WM code (v2) (43d59ed)
To: torvalds/linux <linux@xxxxxxxxxxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
As stated above, this commit introduced a screen flicker regression. Please fix asap!
(cf. http://cgit.freedesktop.org/drm-intel/commit/?id=54da691deb123c045259ebf4f5c67381244f58f1)
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