Pipewire conflicts with pulseaudio at kubuntu 20.10 start up
Pipewire conflict with pulseaudio when starting kubuntu 20.10: it prevent pulseaudio to correctly find audio exit when operating system start, often leaving only digital output and sometimes surround 5.0 or 5.1 exit available to pulseaudio.
Removing Pipewire restore correct operation of pulseaudio