gnome-shell is frozen upon wakeup from DPMS (bisected)

[Max Staudt]

On 11/17/2016 09:27 AM, Michel Dänzer wrote:
> On 14/11/16 11:12 PM, Max Staudt wrote:
>> On 11/14/2016 02:46 AM, Michel Dänzer wrote:
>>> On 11/11/16 02:21 AM, Max Staudt wrote:
>>>> Hi,
>>>>
>>>> I have bisected a commit in v4.6 that fixes a freeze of the screen on
>>>> DPMS sleep:
>>>>
>>>> 777e3cbc791f131806d9bf24b3325637c7fc228d drm/radeon: Switch to drm_vblank_on/off
>>>>
>>>>
>>>> When running 'xset dpms force off' in a GNOME session (I tested this on
>>>> openSUSE Leap 42.2), sometimes the screen will freeze, sometimes it will
>>>> not. It may take several tries.
>>>>
>>>> When it does freeze, the mouse can still be used, but clicking anything
>>>> will (seem to?) have no effect. Typing in an open terminal still works,
>>>> albeit the screen will still be frozen. Run "xterm" and the screen will
>>>> unfreeze. Running "xlogo" does not unfreeze it.
>>>
>>> Does this still happen with current xf86-video-ati Git master?
>>
>>
>> Hmm, good idea!
>>
>>
>> I bisected this, and the problem goes away in this xf86-video-ati commit:
>>
>> 1181b9c582f10b6c523e4b2988e2ce87ecf3d367 Enable DRI3 by default when building for Xorg >= 1.18.3
>>
>>
>> I tested this on Kabini.
>>
>>
>> So... what about DRI2?
> 
> Does the attached kernel patch help with pre-4.6 kernels?

Thanks for coming up with a candidate patch!

I don't currently have access to the hardware, and will test the patch first
thing when I can, early next week.

I'll make sure to let you know.


Thanks

Max