Having trouble with JACK audio output through a USB interface.
Recording guitars and such through an ART USB Dual Pre, which I just received yesterday. Plugged it in, and it worked right out of the box. Configuration in JACK was very straightforward, and had no trouble getting tones from Rakarrack/JackRack/Guitarix etc., and getting processed signal through my headphone out of the preamp.
Then of course I put it away and brought it back out again, and now it doesn't work... :-/
I can still hear the dry signal from the preamp, but no return signal from JACK. It's not just the guitar signal, synths and other JACK-connected things aren't sounding either. I know the input is working, I'm still able to successfully record it in Ardour, even. I just can't hear it.
Both input and output devices are set to hw:1 / USB Audio CODEC, which is what was working yesterday. Tried alternate USB cables and everything I could think of, and no dice.
Any help would be appreciated...