[UbuntuUser]

I install the Kodi 21 FlatPak today and this is my first time ever using a FlatPak, it did not go well, I had a hell of a time getting it to work and when it finally did work the issue I am having is if I use x11 I get screen tearing and if I use Wayland I get frame dropping, is there some trick to smooth playback with a FlatPak?  It is install under Ubuntu 24.04 if that matters.

[MasterCATZ]

getting issues as well , as 21 was the highest version apt now does i tried flatpak after a day trying to get that working ...
after every eposiode is finished it either hangs or audio drops

also how do I get pass-through mode working again ?

its always trying to use pulseaudio when that is not even installed I use pipewire

[oldtvwatcher]

getting issues as well , as 21 was the highest version apt now does i tried flatpak after a day trying to get that working ...
after every eposiode is finished it either hangs or audio drops

also how do I get pass-through mode working again ?

its always trying to use pulseaudio when that is not even installed I use pipewire

I don't recommend using pulseaudio OR pipewire, alsa is the only thing I have found that works.  Also in my opinion Kodi performance on Ubuntu 24.04 kind of sucks, and Ubuntu just makes things more difficult in general.  There is an article here that came across my Mastodon feed tonight about installing Kodi on Debian 12 and it also recommends using alsa.  So unless you have to use Ubuntu for some reason I'd give Debian a try because Ubuntu just isn't cutting it.

[DaVu]

Let me quote from the official docs: 

"ALSA sound devices in /dev/snd are exposed with the socket permission pulseaudio. This includes sound inputs (microphone) and MIDI."

https://docs.flatpak.org/en/latest/sandb...sions.html

So in order to get ALSA working you might have to override permissions. I would try to use: 

flatpak override tv.kodi.Kodi --socket=pulseaudio

which should expose the "pulseaudio" permission to the flatpak package and regarding to the docs ALSA devices should be exposed then as well

If that doesn't work, I would to what @oldtvwatcher suggests, which should be: 
flatpak run tv.kodi.Kodi --audio-backend=alsa &