[ardour-users] Jack is Jacked

Mike Fisher mrfisher_1 at yahoo.com
Thu Mar 30 07:38:39 PST 2006

It turns out I had two installs of jack and qjackctl... I still get some errors though
 --> cannot write to jackstart sync pipe 4 (Bad file descriptor)
 jackd: wait for startup process exit failed
 jackd 0.100.7
 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.
 cannot lock down memory for jackd (Cannot allocate memory)
 loading driver ..
 Enhanced3DNow! detected
 apparent rate = 44100
 creating alsa driver ... hw:0|hw:0|512|2|44100|0|0|nomon|swmeter|-|32bit
 control device hw:0
 configuring for 44100Hz, period = 512 frames, buffer = 2 periods
 nperiods = 2 for capture
 nperiods = 2 for playback
 Noise-shaped dithering at 16 bits
 --> JACK: unable to mlock() port buffers: Cannot allocate memory
 10:37:57.006 Server configuration saved to "/home/axetota/.jackdrc".
 10:37:57.007 Statistics reset.
 10:37:57.010 Client activated.
 10:37:57.012 Audio connection change.
 10:37:57.017 Audio connection graph change.
 Enhanced3DNow! detected
 -->cannot lock down memory for RT thread (Cannot allocate memory)
 -->cannot use real-time scheduling (FIFO at priority 9) [for thread 147458, from thread 147458] (1: Operation not permitted)
 -->cannot use real-time scheduling (FIFO at priority 20) [for thread 49156, from thread 49156] (1: Operation not permitted)
 -->cannot use real-time scheduling (FIFO at priority 10) [for thread 65541, from thread 65541] (1: Operation not permitted)
 I'm going to try rebuilding alsa and then jack again... perhaps this will help

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