[Bug 63931] [7 Series] [Backlight] Incorrectly driver set backlight

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=63931

--- Comment #9 from Aaron Lu <aaron.lu at intel.com> ---
(In reply to comment #8)
> (In reply to comment #4)
> > It is not a bug in -intel or i915.ko, but in the acpi driver for your
> > backlight.
> 
> Yes the backlight is controller by acpi video driver, but video driver works
> correctly. The breaking part is xbacklight always return 100 while actual
> brightness level is not. I wonder how report information to xbacklight?

I mean, who report information to xbacklight?

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