[Bug 77266] Display brightness adjustment not working with kernel 3.14 and Intel IvyBridge

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=77266

--- Comment #1 from Luca Viggiani <lviggiani at gmail.com> ---
Booting with "video.use_native_backlight=1" boot paramenter, causes a weird
behaviour:
Using the fn keys it now actually changes the display brigthness, however after
that display brightness starts "bouncing" from 100% to value set by fn keys...
It will stop bouncing after issuing su -c "echo 0 >
/sys/class/backlight/intel_backlight/brightness"

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