[Bug 73252] [Baytrail-M] brightness can't be adjusted: no ASLE interrupt code

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue May 27 20:01:01 PDT 2014


https://bugs.freedesktop.org/show_bug.cgi?id=73252

--- Comment #23 from Aaron Lu <aaron.lu at intel.com> ---
(In reply to comment #22)
> apci_listen result:
> 
> video/brightnessdown BRTDN 00000087 00000000
> video/brightnessdown BRTDN 00000087 00000000 K
> video/brightnessup BRTUP 00000086 00000000
> video/brightnessup BRTUP 00000086 00000000 K

OK, you get the event. I think the only thing you need is to add:
video.use_native_backlight=1 to kernel cmdline and then your hotkey should
work.

But of course, if the i915 irq handler can be modified to handle opregion
requests, the acpi video interface could probably also work.

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