Mythtv on Ubuntu 22.04 with Wayland

[jarnos]

Does Mythtv 32 work well with Wayland?

[heyted]

I experienced issues with v31 with Wayland. But, v32 has been fine with Wayland for me.

[white_haired_uncle]

I'm compiling v33/fixes for a completely unrelated reason, and I noticed this.

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# Misc Features
Frontend                  yes
Backend                   yes
Qt private headers        no
Wayland extras            no

It looks like Wayland extras is enabled by default, but depends on Qt private headers, so it wasn't enabled for me. This is as far as I looked into it. I don't know the implications, I just saw this and thought of your thread and figured you might want to be aware of this if you end up rolling your own.

[kmdewaal]

What can happen is that you get GUI and video issues. Here I have seen incorrect repainting of the GUI, no more keyboard focus after alt-tab back and forth, and, on 4k screens, the video covering only the left/top corner of the screen.
This can happen when the so-called "Qt platform" is wayland instead of xcb and wayland is the default when wayland is used instead of xorg.
All these issues are fixed by adding the mythfrontend command line option "-platform xcb" and then mythtfrontend runs OK on wayland.
You can verify in the log of mythfrontend if you can find a line like this:

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2023-08-18 19:01:00.280571 I [70171/70171] CoreContext mythrenderopengl.cpp:422:DebugFeatures  OpenGL: Qt platform          : xcb

and this should then show xcb.

[weff]

Thanks for this workaround - this bug hit me this week and I was getting desperate!! This is v34/fixes on fedora and a self-compiled version on voidlinux