[Intel-gfx] [PATCH v4 0/2] drm/i915/opregion: proper handling of DIDL and CADL

[Jani Nikula]

On Fri, 01 Jul 2016, Rainer Koenig <Rainer.Koenig at ts.fujitsu.com> wrote:
> Found a problem: After screensaver kicked in and display was turned off
> the brightness keys stop working.
>
> Problem can be reproduced like that:
>
> 1. Boot laptop
> 2. Test brightness keys, they are working
> 3. open Terminal and issue "xset -display :0 dpms force off"
> 4. the screen goes blank (like after the screensaver timeout)
> 5. push a key to bring the screen back
> 6. test brightness keys again, now they don't work
>
> If the system is sent to suspend and woken up everything is fine again.
>
> Behaviour happens on the 4.7.0-rc5 kernel from the opregion-didl-v4 branch.
> Before I compiled the 4.7.0-r4 from the same git repository. On this
> (v3) everything still works after the screen was blanked.

Maarten, I think the difference is between where and when the calls to
cadl update are made.

BR,
Jani.


>
> Best regards
> Rainer
>
> Am 30.06.2016 um 11:19 schrieb Rainer Koenig:
>> Am 29.06.2016 um 17:36 schrieb Jani Nikula:
>>> This is v4 of [1]. The first three have already been pushed to
>>> drm-intel-next-queued. The only change here is the atomic commit.
>>>
>>> Review and testing would be much appreciated to move this forward. For
>>> testing, I've pushed this to opregion-didl-v4 branch of my repo at [2].
>>>
>> Tested on a Fujitsu LIFEBOOK E736: Brightness keys are working now.
>>
>> Best regards
>> Rainer
>>

-- 
Jani Nikula, Intel Open Source Technology Center