[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 04:02:16 PDT 2014


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

Jani Nikula <jani.nikula at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |aaron.lu at intel.com

--- Comment #18 from Jani Nikula <jani.nikula at intel.com> ---
(In reply to comment #17)
> Created attachment 99939 [details]
> dmesg with drm.debug=0xe and removed loglevel=0

I don't see drm.debug=0xe nor debug messages.

> when press the brightness hotkey, it shows ideapad_laptop: Unkown event:15

That's a problem, and one I can't help with.

> ls /sys/class/backlight
> > acpi_video0  intel_backlight
> 
> echo value to acpi_video0/brightness, brightness no change.(this is used for
> OS.)

This is another problem. Aaron (CC), how does the asle irq get triggered? Can
you debug this part please?

> echo value to intel_backlight/brightness, brightness can be modified.

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