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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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<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#c38">Comment # 38</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>(In reply to <a href="show_bug.cgi?id=76276#c23">comment #23</a>)
<span class="quote">> 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.</span >
While we have this covered now in upstream, I've submitted the revert to 3.14
stable [1]. Let's see what the stable team says.
[1]
<a href="http://mid.gmane.org/b6e9694e03367a3133511f7093c917b4982f1266.1398678778.git.jani.nikula@intel.com">http://mid.gmane.org/b6e9694e03367a3133511f7093c917b4982f1266.1398678778.git.jani.nikula@intel.com</a></pre>
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