Hi! I seem to have been booted off this mailing list sometime in
October.. Not sure why.
Anyway, I have a Focusrite 2i4 and hit some major problems with a
kernel bug, which I think is the same problem you are reporting.
See:
https://bugs.launchpad.net/ubuntu/+source/linux-lowlatency/+bug/1185563
and
https://bugs.launchpad.net/ubuntu/+source/linux-lowlatency/+bug/1185563
The problems have now been fixed upstream. Seems to work OK on
3.11.0-14-lowlatency.
Can't remember exactly which release fixed it tho.
James