this is another side effect of module-swith-on-port-available since iec958 does not support jack detection
you need to comment the loading of this module in default.pa
and
set iec958 as default sink
file bug report if pulseaudio cannot save the default-sink setting when you select iec958 as default sink
https://bugs.freedesktop.org/enter_bug.cgi?product=PulseAudio
this is another side effect of module- swith-on- port-available since iec958 does not support jack detection
you need to comment the loading of this module in default.pa
and
set iec958 as default sink
file bug report if pulseaudio cannot save the default-sink setting when you select iec958 as default sink
https:/ /bugs.freedeskt op.org/ enter_bug. cgi?product= PulseAudio