Here are some patches that fix/work around this bug:
http://<email address hidden>/msg23832.html
(to work around a bug in the focusrite 2i4 reporting the wrong wMaxPacketSize)
http://www.spinics.net/lists/linux-usb/msg90457.html
(to allow startup of jackd at lower latencies in kernels 3.7.0+ on this device)
and:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1191603/+attachment/3761476/+files/ehci-iso-accept
(to fix the related bug #1191603)
It would be great if these could be included in the lowlatency kernel releases.
Here are some patches that fix/work around this bug:
http://<email address hidden> /msg23832. html
(to work around a bug in the focusrite 2i4 reporting the wrong wMaxPacketSize)
http:// www.spinics. net/lists/ linux-usb/ msg90457. html
(to allow startup of jackd at lower latencies in kernels 3.7.0+ on this device)
and:
https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1191603/ +attachment/ 3761476/ +files/ ehci-iso- accept
(to fix the related bug #1191603)
It would be great if these could be included in the lowlatency kernel releases.