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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#c5">Comment # 5</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>Yes It does show the grub menu, but it will go black when it start to load
kernel after I choose one and click "enter".
I tried video.use_bios_initial_backlight=0 parameter on latest
drm-intel-next-queued branch. The eDP works well and won't turn into black
again.
And it seems that there is no difference whether I use the patch and
"video.use_native_backlight=1" module parameter or not.</pre>
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