Cyrus Harmon wrote:
The attached patch provides support for the Steinberg UR44 USB Audio Interface. It’s nothing more than Clemens’ patch to support the UR22, with the device ID modified for the UR44. The patch was tested with kernel versions 3.12.11 and 3.12.12 and I have primarily used it with a PREEMPT RT-patched 3.12.12-rt kernel.
In theory, kernel 3.11 and later should support this device without a quirk entry. I guess it actually does not?
I should note that on one of the systems that I used to test the patch I was never able to achieve xrun-free JACK performance at -p256 -n3 as I would invariably see xruns roughly once every minute.
This sounds as if the playback stream needs to be synchronized to the recording stream.
What is the output of "lsusb -v" for this device?
Regards, Clemens