Thanks for the many answers in the meantime. I reply to this one since it is closest to what I want. On Tue, 28 Apr 2015 14:45:02 -0700 (PDT) Len Ovens <len@xxxxxxxxxxxxx> wrote: > Just to be clear: > if exists USB use USB > else use internal > > Is that about it? Yes, this is exactly what I want. I have configured the internal interface so that it only outputs to the headphone jacks, because I don't want my laptop to make any unexpected sounds in the library, office, etc. (one reason why I don't use pulse: it messes with the alsa mixer). In the very rare occasion that I do need to use pulse, I also start it manually. I have taken all kinds of measures to prevent pulse from starting itself. This question is solely about alsa. > Some questions: > Will the USB AI be plugged in while the system is running? Or before > boot? Both. It occasionally happens that I'm out, suspend the machine, take it home, plug it in. It would be nice if it would use the USB interface after resume. > Will you be starting and stopping Jack, or like it to be > running from login till logout? Jack is no problem, I start it manually from CLI or ardour when I need it. Thanks, Philipp _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user