Im on kubuntu 20.04 and I have no longer surround sound 5+1. When
I choose the 5+1 Profil in pavucontrol the card is away and I get
the message: "no output device". I tried also alsamixer with no
luck. Only analog stereo is working.
sudo mv /var/lib/alsa/asound.state /root/
sudo mount -t tmpfs none /var/lib/alsa