maple
Did you find a problem with audio on HDMI0?
I upgraded libreelec to 12.0.2 and I lost audio.
[RPi4] No Sound on HDMI-0
No, no problem with audio, but I have an AV receiver so I am using passthrough audio (5.1 channels) and of course I did need to configure that in the audio settings. Also, I am using an Intel-based PC, not a Raspberry Pi. So I suspect that my experience would not be entirely relevant for you. With some assistance I only attempted to run Kodi (not LE though) on a Raspberry Pi once, and it simply could not handle the 4:2:2 recordings, it dropped frames like crazy, and since as I have said I am not a techie type that was as far as I went with it.