<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <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 <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <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> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>