Thank you. I have just installed lucid daily build. I had already added the "rtprio 99" and "memlock unlimited" lines to /etc/security/limits.conf even if, surprisingly for me, jackd does start with the -R option. I will undo it before I restart the computer.

$ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 20
file size               (blocks, -f) unlimited
pending signals                 (-i) 16382
max locked memory       (kbytes, -l) 64
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1024
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) unlimited
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited

$ cat /etc/security/limits.d/audio.conf
# generated by jackd's postinst.
#
# Do not edit this file by hand, use
#
#    dpkg-reconfigure -p high jackd
#
# instead.
@audio   -  rtprio     99
@audio   -  memlock    unlimited
#@audio   -  nice      -19

I wonder about the nice value. It is there but commented out. jackaudio.org don't even mention it. What is it for?


Cheers! Pablo