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From: Thomas Gummerer <t.gummerer@gmail.com>
To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org, David Airlie <airlied@linux.ie>,
	Jani Nikula <jani.nikula@linux.intel.com>,
	Daniel Vetter <daniel.vetter@intel.com>,
	Thomas Gummerer <t.gummerer@gmail.com>,
	jan@gondor.com, Tvrtko Ursulin <tvrtko.ursulin@intel.com>,
	Michael Leuchtenburg <michael@slashhome.org>,
	Matt Roper <matthew.d.roper@intel.com>
Subject: [BUG/REGRESSION] Screen flickering
Date: Tue, 12 May 2015 21:54:07 +0200	[thread overview]
Message-ID: <87pp65efmo.fsf@hank.tgummerer.com> (raw)


Hi,

I noticed that on my machine the screen starts to flicker after I
suspend and resume my machine, on the main laptop display if an external
display is attached with kernel v4.1-rc1.  I tracked the regression down
to commit c9f038a1a592 ("drm/i915: Don't assume primary & cursor are
always on for wm calculation (v4)"), and sent a patch that fixes that
behavior at [1] about two weeks ago, although I'm not sure it's the
right thing to do, as I'm not very familiar with the code.  The same bug
still exists in vv4.1-rc3.

Jan Niehusmann confirmed the behavior, but there has been no further
discussion on the topic.  I also forgot to cc the people that were
involved in the patch that caused the regression (sorry about that).

Is there anything else that I can do to help fixing this issue?

Thanks,
Thomas

[1] http://lists.freedesktop.org/archives/intel-gfx/2015-April/065494.html

             reply	other threads:[~2015-05-12 19:54 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-12 19:54 Thomas Gummerer [this message]
2015-05-13  9:14 ` [BUG/REGRESSION] Screen flickering Jani Nikula
2015-05-13  9:53   ` Jan Niehusmann
2015-05-13 10:32     ` Sudip Mukherjee
2015-05-13 11:10       ` Jan Niehusmann
2015-05-13 11:28         ` Sudip Mukherjee
2015-05-13 11:27       ` Thomas Gummerer
2015-05-13 11:34         ` Sudip Mukherjee
2015-05-13 11:23     ` Thomas Gummerer
2015-05-14  3:21 ` Matt Roper
2015-05-14  7:16   ` [PATCH v2] drm/i915: fix screen flickering Thomas Gummerer
2015-05-14 14:28     ` Matt Roper
2015-05-19  7:37       ` Jani Nikula

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