Hello everybody,
Just wanted to inform you all that i tested today my QU-24 and my Linux laptop for recording and playback.
Streaming works both ways. Midi not tested yet.
All you need is to first start QJackCtl and start Jack connection. After that start Ardour and let it use the Jack session that is already created.
After that just patch the inputs and outputs in Ardour as you would with any soundcard.
My Linux Distro is the latest 64-bit Linux Mint (Xfce) in a Thinkpad 410 and version of Ardour is 4.6.0