Dne 10. 04. 19 v 7:54 Carl Karsten napsal(a): > alsasrc device=hw:0,0 ... Device 'hw:0,0' is busy - > how do I un-busy it? > > I'm sure that involves discovering what has it locked. > This command lists processes using your sound devices: sudo lsof /dev/snd/* Most typically pulseaudio, IME. Best regards, Pavel.