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

From	Jani Nikula <jani.nikula@linux.intel.com>
Newsgroups	linux.kernel
Subject	Re: [Intel-gfx] Bad flicker on skylake HQD due to code in the 4.7 merge window
Date	2016-06-17 15:40 +0200
Message-ID	<rL2a5-77b-1@gated-at.bofh.it> (permalink)
References	(4 earlier) <rKMRH-4YX-3@gated-at.bofh.it> <rKN1o-53x-33@gated-at.bofh.it> <rKNb4-56X-23@gated-at.bofh.it> <rKOgO-5IB-5@gated-at.bofh.it> <rKWo1-3vB-1@gated-at.bofh.it>
Organization	Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo

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On Fri, 17 Jun 2016, Daniel Vetter <daniel@ffwll.ch> wrote:
> On Thu, Jun 16, 2016 at 03:42:12PM -0700, James Bottomley wrote:
>> 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@linux-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.
>
> There was a fixes pull after this. Might be worth it to restrict to just
> the i915 changes, which are just 5b4fd5b1111b1230cd037..157d2c7fad0863222
>
> Looking at those nothing seems to stick out which might explain what's
> happening for you.

This should be easy enough to try before bisecting:
http://patchwork.freedesktop.org/patch/msgid/1466162081-12042-1-git-send-email-mika.kahola@intel.com

BR,
Jani.


-- 
Jani Nikula, Intel Open Source Technology Center

Thread

Re: Bad flicker on skylake HQD due to code in the 4.7 merge window Jani Nikula <jani.nikula@linux.intel.com> - 2016-06-13 12:20 +0200
  Re: Bad flicker on skylake HQD due to code in the 4.7 merge window James Bottomley <James.Bottomley@HansenPartnership.com> - 2016-06-16 23:20 +0200
    Re: [Intel-gfx] Bad flicker on skylake HQD due to code in the 4.7  merge window Daniel Vetter <daniel@ffwll.ch> - 2016-06-16 23:30 +0200
      Re: [Intel-gfx] Bad flicker on skylake HQD due to code in the 4.7  merge window James Bottomley <James.Bottomley@HansenPartnership.com> - 2016-06-17 00:50 +0200
        Re: [Intel-gfx] Bad flicker on skylake HQD due to code in the 4.7  merge window Daniel Vetter <daniel@ffwll.ch> - 2016-06-17 09:30 +0200
          Re: [Intel-gfx] Bad flicker on skylake HQD due to code in the 4.7 merge window Jani Nikula <jani.nikula@linux.intel.com> - 2016-06-17 15:40 +0200
            Re: [Intel-gfx] Bad flicker on skylake HQD due to code in the 4.7  merge window James Bottomley <James.Bottomley@HansenPartnership.com> - 2016-06-17 18:10 +0200
            Re: [Intel-gfx] Bad flicker on skylake HQD due to code in the 4.7  merge window James Bottomley <James.Bottomley@HansenPartnership.com> - 2016-06-18 01:10 +0200
              Re: [Intel-gfx] Bad flicker on skylake HQD due to code in the 4.7  merge window James Bottomley <James.Bottomley@HansenPartnership.com> - 2016-06-20 00:20 +0200
                Re: [Intel-gfx] Bad flicker on skylake HQD due to code in the 4.7 merge window Jani Nikula <jani.nikula@linux.intel.com> - 2016-06-20 10:10 +0200
                Re: [Intel-gfx] Bad flicker on skylake HQD due to code in the 4.7  merge window Ville Syrjälä <ville.syrjala@linux.intel.com> - 2016-06-21 17:50 +0200
                Re: [Intel-gfx] Bad flicker on skylake HQD due to code in the 4.7  merge window James Bottomley <James.Bottomley@HansenPartnership.com> - 2016-06-21 23:10 +0200
                Re: [Intel-gfx] Bad flicker on skylake HQD due to code in the 4.7  merge window James Bottomley <James.Bottomley@HansenPartnership.com> - 2016-06-23 13:30 +0200
                Re: [Intel-gfx] Bad flicker on skylake HQD due to code in the 4.7  merge window Steven Newbury <steve@snewbury.org.uk> - 2016-06-23 15:00 +0200
                Re: [Intel-gfx] Bad flicker on skylake HQD due to code in the 4.7 merge window Jani Nikula <jani.nikula@linux.intel.com> - 2016-06-23 15:00 +0200
                Re: [Intel-gfx] Bad flicker on skylake HQD due to code in the 4.7  merge window Steven Newbury <steve@snewbury.org.uk> - 2016-06-23 15:20 +0200
      Re: [Intel-gfx] Bad flicker on skylake HQD due to code in the 4.7  merge window Chris Wilson <chris@chris-wilson.co.uk> - 2016-06-17 10:20 +0200

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