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Subject[BUG/REGRESSION] Screen flickering
Date

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


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