Wayland in Fedora 31 does not allow focus grabbing from the compositer

[hobbes1069]

A user reports the following error when trying to launch MythTV frontend on Fedora 31 Beta:

qt.qpa.wayland: Wayland does not support QWindow::requestActivate()

Per this forum thread it looks like it's no longer supported:

​https://forum.qt.io/topic/90639/comparing-qt-widgets-app-under-gnome-wayland-using-platform-wayland-egl-to-xcb/9

[Gary Buhrmaster]

In *theory* fixed with later Qt and later xdg-shell (I think Qt 5.12 (possibly backported to Qt 5.11) and weston 6). However, F31 beta's may be problematic in other ways. Is it reproducable on F30 stable?

[jayjaytay]

I can confirm that I'm getting the same error under Wayland and Fedora 31 final with the following packages installed:

qt5-qtwayland-5.12.5-2.fc31.x86_64
mutter-3.34.1-4.fc31.x86_64
weston-7.0.0-2.fc31.x86_64

MythTV works fine under Xorg, however.

[Stuart Auchterlonie]

Mark,

is this something we can take care of in your OpenGL rewrite, or do we need to address this separately?

Regards Stuart

[Stuart Auchterlonie]

Also crashes, see #13498

[mark-kendall]

From the description, I'm not sure what the actual reported issue is here.

For me, in limited testing using master, mythfrontend starts as normal but the contents of the screen are not displayed. If I navigate as normal (by guesswork) to a playback screen, playback is fine and the UI is then displayed normally after exiting playback.

So the 'qt.qpa.wayland: Wayland does not support QWindow::requestActivate()' message *may* be a red herring - but somewhere we are triggering the correct behaviour when either entering or exiting playback.

If I force the use of the Qt painter, everything is fine (but no video playback)

[mark-kendall]

Oops - forgot to reference this in commit.

Should be fixed by:

​https://github.com/MythTV/mythtv/commit/f42ae424cd54d356b6aa93625e83dcde99129a8f

[mark-kendall]

Rendering works without issue on Wayland with master/v31 - although the requestActivate warnings are still received - they do not appear to be an issue.

Note: the fix applied to master/v31 cannot be backported as the code has changed too much - and a similar fix is unlikely to work with the old code regardless.

If there is still an issue, please open a new ticket.