From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 60523] Radeon DPM not working with 2 monitors attached to
Radeon HD5770 (Juniper)
Date: Thu, 15 Aug 2013 20:09:32 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=60523
--- Comment #20 from Alex Deucher ---
Christian, Can you try this patch:
http://lists.freedesktop.org/archives/dri-devel/2013-August/043464.html
I the vblank period on your monitor is short enough that it's causing the
driver to select the multi-head case to avoid mclk switching. You should also
try the patch in comment 17.
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