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<body><span class="vcard"><a class="email" href="mailto:jani.nikula@intel.com" title="Jani Nikula <jani.nikula@intel.com>"> <span class="fn">Jani Nikula</span></a>
</span> changed
<a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - Backlight control broken on Dell XPS13 w/ kernel 3.14-rc7"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76276">bug 76276</a>
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<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>NEEDINFO
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<td>ASSIGNED
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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - Backlight control broken on Dell XPS13 w/ kernel 3.14-rc7"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76276#c23">Comment # 23</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - Backlight control broken on Dell XPS13 w/ kernel 3.14-rc7"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76276">bug 76276</a>
from <span class="vcard"><a class="email" href="mailto:jani.nikula@intel.com" title="Jani Nikula <jani.nikula@intel.com>"> <span class="fn">Jani Nikula</span></a>
</span></b>
<pre>Fix pushed as
commit 1901dd794a87911d82edab57dc6f87c7fe9c9bfc
Author: Jani Nikula <<a href="mailto:jani.nikula@intel.com">jani.nikula@intel.com</a>>
Date: Wed Apr 9 11:31:37 2014 +0300
drm/i915: do not setup backlight if not available according to VBT
and
commit d76fedf1980022912508e742660cebdc27c7a010
Author: Jani Nikula <<a href="mailto:jani.nikula@intel.com">jani.nikula@intel.com</a>>
Date: Wed Apr 9 11:22:06 2014 +0300
drm/i915: check VBT for supported backlight type
These will fix the issue for 3.15 and beyond, but Daniel feels it's too risky
to backport these to 3.14. I'll leave the bug open until we've figured out what
to do with that. Possibly the safest approach would be to revert
commit bc0bb9fd1c7810407ab810d204bbaecb255fddde
Author: Jani Nikula <<a href="mailto:jani.nikula@intel.com">jani.nikula@intel.com</a>>
Date: Thu Nov 14 12:14:29 2013 +0200
drm/i915: remove QUIRK_NO_PCH_PWM_ENABLE
in 3.14 stable.</pre>
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