[Bug 67454] After suspend/resume, screen is black for all but the highest levels with i915 driver on MacBook Air 6,2

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=67454

--- Comment #42 from Jani Nikula <jani.nikula at intel.com> ---
Let me get this straight: the backlight works all right before suspend, but
fails after resume? I'm a bit surprised there isn't anything in the
before/after register dumps that would explain this. Do they really reflect the
working and broken states?

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