I found a temporary fix. Switching the audio sink to another sink and back fixes audio, but it has to be done on every restart of the game. Interesting, you're the first to find a workaround like this. What happens if you disable one or the other sink? What audio interfaces are you using? Can you p...

I found a temporary fix. Switching the audio sink to another sink and back fixes audio, but it has to be done on every restart of the game.

Same issue, I'll play around with it and see if I can fix it. What I found so far is that pulseaudio recognizes the factorio source, but factorio doesn't push any audio to the source (determned by the sound level bar in pavucontrol).