Hi all, So I've just installed Ubuntu 6.09, and followed the instructions on http://fort2.xdas.com/~kor/oss2jack/install.html to install the realtime-lsm module and I've added @audio - rtprio 80 @audio - memlock 500000 to /etc/security/limits.conf and set the realtime mode on Jack. Seems ok, the only thing is that I can't get below 5.8 ms latency. Jack's behaving nicely with very few xruns, but won't do any better. The output of the messages with 32 frames for capture, for example, is: 10:41:35.039 Startup script... 10:41:35.039 artsshell -q terminate sound server terminated 10:41:35.375 Startup script terminated successfully. 10:41:35.381 JACK is starting... 10:41:35.382 /usr/bin/jackd -R -u -dalsa -dhw:0 -r44100 -p32 -n2 -S 10:41:35.391 JACK was started with PID=5503 (0x157f). jackd 0.100.0 Copyright 2001-2005 Paul Davis and others. jackd comes with ABSOLUTELY NO WARRANTY This is free software, and you are welcome to redistribute it under certain conditions; see the file COPYING for details JACK compiled with System V SHM support. loading driver .. apparent rate = 44100 creating alsa driver ... hw:0|hw:0|32|2|44100|0|0|nomon|swmeter|-|16bit control device hw:0 configuring for 44100Hz, period = 32 frames, buffer = 2 periods ALSA: cannot set period size to 32 frames for capture ALSA: cannot configure capture channel cannot load driver module alsa 10:41:35.502 JACK was stopped successfully. 10:41:37.430 Could not connect to JACK server as client. Please check the messages window for more info And I can't see anything of any use in here. Any ideas? Jonty