Dear Corentin,

2012/8/9 Corentin Chary <[email protected]>:
> On Thu, Aug 9, 2012 at 5:29 AM, AceLan Kao <[email protected]> wrote:
>> Dear Corentin,
>>
>> 2012/8/9 Carlos Alberto Lopez Perez <[email protected]>:
>>> On 08/08/12 11:34, Corentin Chary wrote:
>>>>> The problem is that the /sys/class/backlight/acpi_video0 directory still 
>>>>> exists
>>>>> > and the gnome-settings-daemon will choose acpi_video0 for the
>>>>> > brightness functions
>>>> Are you sure acpi_video_unregister() was called in this case ? can you
>>>> add some traces to video.c to see what happened and why
>>>> backlight_device_unregister() wasn't called ?
>> Yes, you are right, acpi_video_unregister() is not be called.
>> #ifdef CONFIG_ACPI_VIDEO doesn't work as expected.
>> In ubuntu kernel, it's config as module, CONFIG_ACPI_VIDEO=m.
>> I will try to figure out what happened.
>>
>>>>> > But, if asus-wmi is loaded before video, then video won't call
>>>>> > backlight_device_register(),
>>>>> > since the flag is already be set.
>>>> Honestly, I don't know if there is a way to do that, and asus-wmi
>>>> should be loadable and working at any time, not only on boot.
>>>
>>> What about writing an udev rule to force using acpi_video0 for asus-wmi?
>>>
>>> Use udevadm to get the attributes for building the rule
>>>
>>> udevadm info --attribute-walk --path=/sys/class/backlight/acpi_video0
>>>
>
> Should be fixed by
> https://github.com/iksaif/platform-drivers-x86/commit/3a00b9fd44ac59f5ded116478e750e883c869bb2
> (not yet in tree, was waiting for next merge window but will send it
> in an RC if it fixes the issue)
Great, thanks a lot.

>
> --
> Corentin Chary
> http://xf.iksaif.net
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-- 
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