Re: [Intel-gfx] Bad flicker on skylake HQD due to code in the 4.7 merge window

From: James Bottomley
Date: Thu Jun 16 2016 - 18:42:31 EST


On Thu, 2016-06-16 at 14:29 -0700, James Bottomley wrote:
> On Thu, 2016-06-16 at 23:24 +0200, Daniel Vetter wrote:
> > I guess we'll need the bisect on this one to make progress.
>
> Sigh, I was afraid that might be the next step.

OK, I have a curious data point. I assumed the problem would be
somewhere in the drm update, so I started bisecting that at the top.
However, the top most commit:

commit 1d6da87a3241deb13d073c4125d19ed0e5a0c62c
Merge: 1f40c49 a39ed68
Author: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Date: Mon May 23 11:48:48 2016 -0700

Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux

Isn't actually bad. There's no flicker here, so whatever caused the
problem came from some update after this.

James