yes ! simple ! jackstart i dont read that, sorry use jackd -R (...) > I think, nobody is using jackstart anymore. Did you try "jackd" > directly? > Do you have the realtime-lsm-module installed lsm with hard realtime from Sir Ingo Molnar patch ?? > or better yet: > Are you running a Rlimits-aware PAM as described here: .com Rlimits ?? again avalaible on ubuntu ? have fun (other thing : dont forget to use 1024 in /proc/sys/dev/rtc/max-user-freq at boot time to have a complete configuration, maybe)