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...