hey all first off i when i tried to start ardour it gave me an error message saying it couldn't start jack because of several possible reasons it also said some thing about memory allocation in the message does any one know what this problem is and how to solve it? Secondly i inputted the below command into terminal for my ederol u a 25 and avid m box mini sound cards and got the below results: ed command inputted for ederol and avid sound cards: jackd -d alsa -d hw:UA25 -n 3 -p 128 -r 48000 u a 25 output results: sound-warrior@the-megga-machine:~$ jackd -d alsa -d hw:UA25 -n 3 -p 128 -r 4800 jackdmp 1.9.8 Copyright 2001-2005 Paul Davis and others. Copyright 2004-2011 Grame. jackdmp 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 Cannot create thread 1 Operation not permitted Cannot create thread 1 Operation not permitted Cannot create thread 1 Operation not permitted JACK server starting in realtime mode with priority 10 Cannot lock down 82241434 byte memory area (Cannot allocate memory) audio_reservation_init Acquire audio card Audio1 creating alsa driver ... hw:UA25|hw:UA25|128|3|4800|0|0|nomon|swmeter|-|32bit configuring for 4800Hz, period = 128 frames (26.7 ms), buffer = 3 periods ALSA: final selected sample format for capture: 24bit little-endian ALSA: use 3 periods for capture ALSA: final selected sample format for playback: 24bit little-endian ALSA: use 3 periods for playback Cannot use real-time scheduling (RR/10)(1: Operation not permitted) AcquireSelfRealTime error avid m box mini output results: sound-warrior@the-megga-machine:~$ jackd -d alsa -d hw: Avid Mbox Mini -n 3 -p 128 -r 4800 jackdmp 1.9.8 Copyright 2001-2005 Paul Davis and others. Copyright 2004-2011 Grame. jackdmp 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 Cannot create thread 1 Operation not permitted Cannot create thread 1 Operation not permitted Cannot create thread 1 Operation not permitted JACK server starting in realtime mode with priority 10 Cannot lock down 82241434 byte memory area (Cannot allocate memory) audio_reservation_init Acquire audio card Audio0 creating alsa driver ... hw:|hw:|128|3|4800|0|0|nomon|swmeter|-|32bit ATTENTION: The playback device "hw:" is already in use. Please stop the application using it and run JACK again Cannot initialize driver JackServer::Open() failed with -1 Failed to open server sound-warrior@the-megga-machine:~$ does any one know what these errors given by terminal mean? and how to solve the problem? Your help with these problems would be most welcome kind regards trahern.