What is the fix for this issue? I’ve connected my Steam Deck to my LG G3 tv (HDMI ARC audio) via Valve Dock, and the audio comes from the Deck directly, not HDMI. Seems this is not fixed.

I was also having this issue after removing pulse, jack, and alsa. I replaced them with [wireplumber, pipewire, pipewire-jack, pipewire-alsa, pipewire-pulse]. This had all the audio on my system working extremely well but then Unity stopped working.

Basically what happens in this case is Unity spawns it's playback node called 'FMOD Ex App' and then routes it into the most generic output nodes it can find like: Realtek Audio, Starship/Matisse, and of course NVIDIA HDMI. I use an audio interface on my computer so that's the node I actually want to receive the audio.

This exact solution only works with package configuration that I mentioned but unused devices/nodes should work no matter what in cases like this

My solution was to either get the Unity playback node to target my audio interface or to remove all nodes that I would never want to route audio to. I made a wireplumber.conf file located at '~/.config/wireplumber/wireplumber.conf.d/51-disable-nodes.conf'. I then added the devices that I didn't want to it like so:

```
monitor.alsa.rules = [
{
matches = [
{
node.name = "alsa_output.pci-0000_0a_00.1.hdmi-stereo"
}
]
actions = {
update-props = {
node.disabled = true
}
}
}
{
matches = [
{
node.name = "alsa_output.pci-0000_0c_00.4.iec958-stereo"
}
]
actions = {
update-props = {
node.disabled = true
}
}
}
]
```

If you are struggling to find devices you can use `coppwr` to get a graph where you can see audio connections being made as well as all the node properties. You can also just use `pw-cli info all` to get a print out of everything. You can also route that to a .log file with `pw-cli info all > devices.log 2>&1`

After making changes be sure to restart wireplumber daemon

So this issue was fixed in 2022.3.27f1 (I was able to test it) and now is listed again as a known issue in 2022.3.28f1?

Seems like this issue is because in some Linux systems default sound device is HDMI audio, which may exists on GPU but not on the display.
So as a workaround you can disable it (in BIOS, or in your Linux). Type something like this in terminal:
pacmd list-cards
remember name of top-most card in that list (Without symbols < > ). Most likely it will be something like alsa_card_pci_manyNumbers. Should contain description how it is indeed HDMI. Then type:
pacmd set-card-profile YourHDMICardName off
Reboot.
Enjoy.
-----
Or you can disable it in some audio controlling software or in some BIOS, but use it only if you are certain you don't need HDMI audio at all.

manjaro 2022.3.22f1, 2022.3.14f1. same problem

Can confirm that this is still an issue in 2022.3.16f, running a player built for linux, on Ubuntu 22.04. Switching from one audio output device and back "fixes" the issue, but only for the duration of the apps runtime.

Having the same issue on ubuntu 23.10, unity version 2022.3.14f1

I wrote on the fmod forum about this problem, the administrator replied that the unity editor uses an old version of this mod to output sound. By the way, this problem with the ports was also on their forum with fmod, the sound was also sent to port 0, but the active port of the sound speakers is different. They somehow solved it, but they couldn't help me with the unity audio engine. Thank you for your work.

As a possible workaround, I managed to get audio working again after updating to a version that had no audio. See https://forum.unity.com/threads/audio-in-unity-2022-3-14f1-lts-linux-not-working.1521397/#post-9519508

@IRINA-UK which logs are you looking at?