[Bug 87286] [i915 intel_backlight] can't regulate brightness at GDM login prompt if HDMI monitor connected

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87286

--- Comment #15 from Luca Boccassi <luca.boccassi at gmail.com> ---
(In reply to jre.winesim from comment #14)
> Confirmed, Debian's xserver-xorg-video-intel 2:2.99.917-1~exp1 fixes both
> the brightness control issue and the initally black screen when I'm testing
> with Linux 3.16.
> 
> So there is another way to fix this. No idea what this means for my proposed
> kernel patch and all those other similar disable_native_backlight quirks.

If the native backlight helper works, my opinion would be that it's best to
keep using it.

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