Hi Clemens
Well, there is the patch from Clemens Ladisch:
http://linuxaudio.org/mailarchive/lad/2013/2/23/197831
This was working for me.
However, I didn't test that with 3.13.x lately as I only
needed the UR22 to suck in some measurement data from a
low noise microphone at that time.
yep, I tried that patch with 3.13 and 3.14.
Worked both, but only with USB 2.0 as stated before.
Cheers
Christian