[PATCH xserver] modesetting: Fix page flipping under DRI 3.2.

[Mario Kleiner]

I'm sorry to report it didn't fix it. This tested with current head of
xserver master, mesa master, so with my and your fixes included, and
apparently some new fixes from today.

Compositing under old Ubuntu Unity-7 == compiz and Gnome shell work
fine, as does KDE-5 Plasma with GLX+OpenGL compositing. Only
EGL+OpenGL is broken under DRI3. In KDE-5 you can use the kde system
settings app, select monitor settings, then tab "compositor" to switch
the compositing backend between GLX and EGL to test this.

-mario

On Wed, Apr 4, 2018 at 6:43 PM, Daniel Stone <daniel at fooishbar.org> wrote:
> Hi Mario,
>
> On 4 April 2018 at 17:40, Mario Kleiner <mario.kleiner.de at gmail.com> wrote:
>> On Wed, Apr 4, 2018 at 6:19 PM, Daniel Stone <daniel at fooishbar.org> wrote:
>>> Ugh. I've applied your pageflip patch, lfrb's two-patch atomic fix
>>> series and my fix-old-clients series, which for me fixes KDE running
>>> with both old and new Mesa. That's just running a Plasma 5 desktop
>>> with 'startkde', either single or dual head. Do things work for you if
>>> you have all those applied?
>>
>> I have all applied, but this new series "Fix modifier server / non-mod client"
>> of you: https://patchwork.freedesktop.org/series/41142/
>>
>> If that's the right one, i'll test it later today.
>
> Correct. If you could please try that series, that would be great. I
> did see KDE failing before that series, but it seems much happier now.
>
> Cheers,
> Daniel