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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [HSW ULT]eDP brightness is zero after the computer start"
href="https://bugs.freedesktop.org/show_bug.cgi?id=70791#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [HSW ULT]eDP brightness is zero after the computer start"
href="https://bugs.freedesktop.org/show_bug.cgi?id=70791">bug 70791</a>
from <span class="vcard"><a class="email" href="mailto:qingshuai.tian@intel.com" title="Qingshuai Tian <qingshuai.tian@intel.com>"> <span class="fn">Qingshuai Tian</span></a>
</span></b>
<pre>Created <span class=""><a href="attachment.cgi?id=88023" name="attach_88023" title="dmesg(its brightness can't be changed by the function keys)">attachment 88023</a> <a href="attachment.cgi?id=88023&action=edit" title="dmesg(its brightness can't be changed by the function keys)">[details]</a></span>
dmesg(its brightness can't be changed by the function keys)
This dmesg is for the phenomenon when the brightness can't be changed by the
function keys and also can't find the file
(/sys/class/backlight/intel_backlight/brightness).</pre>
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