the playback device "hw:0" is already in use. Please stop the application using it and run JACK again cannot load driver module alsa no message buffer overruns 15:06:20.130 JACK was stopped successfully. 15:06:20.132 Post-shutdown script... 15:06:20.134 killall jackd jackd: no process killed 15:06:20.358 Post-shutdown script terminated with exit status=256. 15:06:22.144 Could not connect to JACK server as client. Please check the messages window for more info.