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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - [Regression] Internal backlight brightness initially set to 0 when external display is connected"
href="https://bugs.freedesktop.org/show_bug.cgi?id=79581#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - [Regression] Internal backlight brightness initially set to 0 when external display is connected"
href="https://bugs.freedesktop.org/show_bug.cgi?id=79581">bug 79581</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>Actually, since you are only on 2.21.15, this likely to be an issue with
commit 28a057105b6974803aee0d68c2a71f322095dfde
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Mon Jan 6 14:37:09 2014 +0000
uxa: Disable updating properties upon reading their values
Backport commit e76b08cad2770015346fd4cd757de3bb3b6ff37c
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Tue Oct 15 12:46:09 2013 +0100
sna: Disable updating properties upon reading their values
in order to prevent random screen blanking upon return from DPMS.
Reported-by: Alexander Monakov <<a href="mailto:amonakov@gmail.com">amonakov@gmail.com</a>>
Bugzilla: <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Screen doesn't turn on after DPMS standby and subseqent suspend"
href="show_bug.cgi?id=73181">https://bugs.freedesktop.org/show_bug.cgi?id=73181</a>
Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>></pre>
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