(Not terribly surprisingly) I can't get the Agnula low latency kernel working on my Ubuntu box (the nvidia drivers are not happy!) So, I figured I'd attempt the set_rtlimits approach. Starting jackd with: set_rtlimits -d -r=10 /usr/bin/jackd -dalsa -dhw:1 -r44100 -p1024 -n2 *almost* gets rid of xruns. What are more appropriate settings? I've tried everything from -r=1 to -r=100. Nothing completely eliminated xruns. Second, how do I configure qjackctl to use set_rtlimits, if this is indeed the best approach? I see hooks for start & stop scripts, but nothing to modify the command. Thanks Reuben