I am testing a Focusrite 2i2 and I cannot export my session.
The exporting dialog hangs forever.
However if, in jack2, I change to another card, all is working perfectly.
What is strange is that the other parameters of the two jack configurations are exactly the same!
I am using archlinux, jack2-git (compiled without dbus) and the last version of ardour. Kernel is the last realtime kernel.
Moreover, I have found that I cannot use focusrite as input and another card as output, because of periodic xruns (every 150 seconds aprox.)
If I use the same card for in/out xruns disappears and I can achieve around 2,6 ms latency at 88.2 kHz (ardour is showing 1,5)