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

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Message-ID: <1466116932.2257.4.camel@HansenPartnership.com>
Date:	Thu, 16 Jun 2016 15:42:12 -0700
From:	James Bottomley <James.Bottomley@...senPartnership.com>
To:	Daniel Vetter <daniel@...ll.ch>
Cc:	Jani Nikula <jani.nikula@...ux.intel.com>,
	intel-gfx <intel-gfx@...ts.freedesktop.org>,
	dri-devel <dri-devel@...ts.freedesktop.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Rodrigo Vivi <rodrigo.vivi@...el.com>
Subject: Re: [Intel-gfx] Bad flicker on skylake HQD due to code in the 4.7
 merge window

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@...ux-foundation.org>
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