From: Jani Nikula <jani.nikula@linux.intel.com>
To: James Bottomley <James.Bottomley@HansenPartnership.com>,
Daniel Vetter <daniel@ffwll.ch>
Cc: intel-gfx <intel-gfx@lists.freedesktop.org>,
"Syrjala, Ville" <ville.syrjala@intel.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
dri-devel <dri-devel@lists.freedesktop.org>,
Rodrigo Vivi <rodrigo.vivi@intel.com>
Subject: Re: [Intel-gfx] Bad flicker on skylake HQD due to code in the 4.7 merge window
Date: Mon, 20 Jun 2016 11:03:44 +0300 [thread overview]
Message-ID: <8737o89ti7.fsf@intel.com> (raw)
In-Reply-To: <1466373202.2280.3.camel@HansenPartnership.com>
Cc: Ville
On Mon, 20 Jun 2016, James Bottomley <James.Bottomley@HansenPartnership.com> wrote:
> OK, my candidate bad commit is this one:
>
> commit a05628195a0d9f3173dd9aa76f482aef692e46ee
> Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Date: Mon Apr 11 10:23:51 2016 +0300
>
> drm/i915: Get panel_type from OpRegion panel details
>
> After being more careful about waiting to identify flicker, this one
> seems to be the one the bisect finds. I'm now running v4.7-rc3 with
> this one reverted and am currently seeing no flicker problems. It is,
> however, early days because the flicker can hide for long periods, so I
> 'll wait until Monday evening and a few reboots before declaring
> victory.
If that turns out to be the bad commit, it doesn't really surprise me,
and that in itself is depressing.
It might be helpful if you could add drm.debug=14 module parameter, and
provide dmesgs from boot both with and without the above commit (it's
enough to see i915 load). Please also provide
/sys/kernel/debug/dri/0/i915_opregion.
BR,
Jani.
--
Jani Nikula, Intel Open Source Technology Center
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next prev parent reply other threads:[~2016-06-20 8:03 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-30 19:59 Bad flicker on skylake HQD due to code in the 4.7 merge window James Bottomley
2016-05-31 7:51 ` Jani Nikula
2016-05-31 13:33 ` James Bottomley
2016-06-13 10:14 ` Jani Nikula
2016-06-16 21:15 ` James Bottomley
2016-06-16 21:24 ` Daniel Vetter
2016-06-16 21:29 ` [Intel-gfx] " James Bottomley
2016-06-16 22:42 ` James Bottomley
2016-06-17 7:28 ` Daniel Vetter
2016-06-17 13:34 ` Jani Nikula
2016-06-17 16:08 ` [Intel-gfx] " James Bottomley
2016-06-17 23:06 ` James Bottomley
2016-06-19 21:53 ` James Bottomley
2016-06-20 8:03 ` Jani Nikula [this message]
2016-06-21 13:53 ` James Bottomley
2016-06-21 15:44 ` Ville Syrjälä
2016-06-21 21:00 ` James Bottomley
2016-06-23 11:25 ` [Intel-gfx] " James Bottomley
2016-07-02 6:24 ` Thorsten Leemhuis
2016-07-07 16:14 ` [Intel-gfx] " Ville Syrjälä
2016-07-07 16:55 ` James Bottomley
2016-07-07 19:19 ` James Bottomley
2016-07-08 10:19 ` Ville Syrjälä
2016-07-08 14:48 ` James Bottomley
2016-07-08 16:56 ` Ville Syrjälä
2016-09-11 14:10 ` [Intel-gfx] " James Hogan
2016-09-13 13:59 ` Jani Nikula
2016-06-23 12:52 ` Steven Newbury
2016-06-23 12:59 ` Jani Nikula
2016-06-23 13:14 ` Steven Newbury
2016-06-24 10:59 ` Chris Wilson
2016-06-24 11:48 ` [Intel-gfx] " Steven Newbury
2016-06-24 12:42 ` Chris Wilson
2016-07-12 10:08 ` Daniel Vetter
2016-09-14 9:43 ` Jani Nikula
2016-06-17 8:12 ` Chris Wilson
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