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

[Maarten Lankhorst]

Op 01-07-16 om 15:51 schreef 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.
Did you see my comment on patch 2?

~Maarten