[Bug 82381] Dell latitude E5440 fails to turn back laptop display (eDP) backlight after DPMS off

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=82381

--- Comment #3 from Jani Nikula <jani.nikula at intel.com> ---
(In reply to LÉVAI Dániel from comment #2)
> This particular thing didn't happen before 3.16.0 (but I don't know about
> 3.16-rc versions).

Any chance of finding a good version and bisecting?

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