wireplumber/wireplumber.conf.d/alsa-vm.conf


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# ALSA node property overrides for HDMI output

monitor.alsa.rules = [
  # Generic PCI cards on any VM type
  {
    matches = [
      { node.name = "~alsa_output.*" }
    ]
    actions = {
      update-props = {
        audio.format = "S16LE"
        audio.channels = 2
        audio.position = "FR,FL"
      }
    }
  }
]