Hola...pues nada... Sigo teniendo el mismo problema...y no doy con la solución...y he probado varios kernels... Los mensajes que da el qjackctl son los siguientes: ALSA: poll time out, polled for 7999051 usecs DRIVER NT: could not run driver cycle 18:00:00.415 ALSA connection graph change. 18:00:00.417 JACK connection graph change. 18:00:00.525 Shutdown notification. 18:00:00.536 JACK is stopping... 18:00:00.558 JACK is being forced... jack main caught signal 12 zombified - calling shutdown handler 18:00:00.571 Audio active patchbay scan... 18:00:00.572 MIDI active patchbay scan... 18:00:00.594 ALSA connection graph change. 18:00:00.760 JACK was stopped successfully. 18:00:00.762 Post-shutdown script... 18:00:00.763 killall jackd 18:00:00.775 MIDI active patchbay scan... jackd: no process killed 18:00:01.192 Post-shutdown script terminated with exit status=256. A ver si alguien me puede echar una mano... Gracias anticipadas...