[Bug 78653] Backlight control broken on Dell XPS M1330 w/ kernel >= 3.14.1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=78653

Jani Nikula <jani.nikula at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO

--- Comment #3 from Jani Nikula <jani.nikula at intel.com> ---
(In reply to comment #2)
> I finally got some time to do a bit of debugging.
> 
> Applying this hack: https://bugs.freedesktop.org/show_bug.cgi?id=76276#c15
> and only this (to 3.15-rc6) solves the problem for me.

And backlight control works with that? What do you have in
/sys/class/backlight?

The VBT says we should register backlight for that, but then it doesn't work.
Hmm.

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