[Bug 103781] Intel - display brightness control not working with i915.fastboot=1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103781

--- Comment #4 from Arthur Borsboom <arthurborsboom at gmail.com> ---
Hi Maarten,

I have cloned drm-tip, applied your patch, compiled and installed this kernel
4.15.0-rc1 to my daily system.

If I boot this kernel without the fastboot kernel option, the brightness keys
still work. If I add 'i915.fastboot=1', then the brightness keys do not work as
before anymore.

I also noticed that when using the fastboot method, the brightness of the
screen is at maximum.

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