[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

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

           What    |Removed                     |Added
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             Status|NEEDINFO                    |ASSIGNED

--- Comment #88 from Jani Nikula <jani.nikula at intel.com> ---
(In reply to comment #87)
> Is there any way to implement the fix from mba6x_bl directly in the proper
> driver? mba6x_bl works for me, so obviously whatever the intel driver is
> doing wrong could be corrected with a patch.

The mba6x_bl is a platform specific driver for the mba. What that driver does
can not be duplicated within the i915 driver. These drivers control the
backlight in completely different ways.

If we figure out what changes in a suspend/resume cycle that breaks the
backlight control in i915, we'll obviously try to fix it. But it might just as
well be that the breakage is outside of i915. I don't have a mba, I don't know
how it's wired up.

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