When initially configuring the box pactl list sources doesn't find the line source (as if the pulse hasn't been initialised, yet). Subsequent runs of the playbook are able to resolve the line source. Investigate some way of forcing the audio to initialise.
When initially configuring the box
pactl list sources
doesn't find the line source (as if the pulse hasn't been initialised, yet). Subsequent runs of the playbook are able to resolve the line source. Investigate some way of forcing the audio to initialise.