qjackctl + jackd problem
so i get the jack server not running error when i try to start ardour. then when i try to run jackcontrol it says that it could not conect to the jack served either.
this is what it gives me
21:58:49.642 Startup script...
21:58:49.642 artsshell -q terminate
JACK tmpdir identified as [/dev/shm]
sh: artsshell: not found
21:58:49.846 Startup script terminated with exit status=32512.
21:58:49.846 JACK is starting...
21:58:49.846 /usr/bin/jackd -R -dalsa -dhw:0 -r44100 -p1024 -n2
21:58:49.847 JACK was started with PID=12759 (0x31d7).
jackd 0.103.0
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.
cannot use real-time scheduling (FIFO at priority 10) [for thread -1210770752, from thread -1210770752] (1: Operation not permitted)
cannot create engine
21:58:49.853 JACK was stopped successfully.
21:58:49.853 Post-shutdown script...
21:58:49.853 killall jackd
jackd: no process killed
21:58:50.057 Post-shutdown script terminated with exit status=256.
21:58:51.953 Could not connect to JACK server as client. Please check the messages window for more info.
JACK tmpdir identified as [/dev/shm]
oh yea im running ubuntu 7.10
Do you have a realtime kernel and have you setup your /etc/security/limits.conf file correctly?
Gutsy has a realtime kernel in the multiverse ubuntu apt repository, you can install it by running: “apt-get install linux-rt” and restarting after everything has been downloaded and installed.
Your /etc/security/limits.conf file should have something similar to this:
@audio - rtprio 99
@audio - memlock 500000
@audio - nice -10
Then make sure that the user you are running jack with is a member of the audio group. I’ve been running JACK realtime under Gutsy since it was released and it’s been very stable for me so far :)
im sorry ive just started getting into linux.
i installed the linux-rt however my limits.conf file doesn’t have anything like what you posted
in order to get jack control to work i have to run it from the terminal as root (sudo qjackctl) i cant figure out how to run ardour as root, would that allow it to run?
thank you for the help
You can run all your jack applications as root but it is a much better idea to run jack and all other applications as your normal user.
You can do something like this:
sudo gedit /etc/security/limits.conf
and add:
USERNAME - rtprio 99
USERNAME - memlock 500000
USERNAME - nice -10
And just replace “USERNAME” with your username. Save that. I think you may have to restart and everything should run okay without having to run qjackctl as root.
I’m also new to Linux and Ardour and after spending many hours (days) reading and trying things out, hopefully these may help you;
Check your Qjackctl Connections? There should be Capture & Playback entries relating to your M-audio mobilepre Input\Output. If not then you’ve got some other problem, probably hardware related.
Ensure the track you are recording to is ’armed’ via the Record icon button - not just the one at the top of the screen. I was bashing my head against the desk for quite a while trying to work out why one minute I was recording, then shortly after I couldn’t - believed I stuffed the Connections up and try a million different combinations - what a waste of time, all I had to do was hit that little record button!!!
Though not directly a problem with ardour, this forum seems the only place with answers for folks running ubuntu/xubuntu 7.10
I do in fact have the linux-rt kernel and the realtime-lsm stuff installed, but I’m having a curious problem.
I can run jackd in realtime fro the commandline no trouble with this command:
jackd -R -p128 -dalsa -dhw:0 -r96000 -p1024 -n2
and it runs loads fine, sort of. I mean it runs but gives me no errors even though nothing can connect to it.
Running qjackctl with the same command for starting jack spits out this error:
12:12:41.245 Patchbay deactivated.
12:12:41.287 Statistics reset.
12:12:41.342 MIDI connection graph change.
JACK tmpdir identified as [/dev/shm]
12:12:41.507 MIDI connection change.
12:12:42.558 Startup script...
12:12:42.558 artsshell -q terminate
JACK tmpdir identified as [/dev/shm]
sh: artsshell: not found
12:12:42.761 Startup script terminated with exit status=32512.
12:12:42.762 JACK is starting...
12:12:42.762 jackd -R -p128 -m -dalsa -dhw:0 -r96000 -p1024 -n2
12:12:42.770 JACK was started with PID=19118 (0x4aae).
jackd 0.103.0
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 ..
Enhanced3DNow! detected
SSE2 detected
apparent rate = 96000
creating alsa driver ... hw:0|hw:0|1024|2|96000|0|0|nomon|swmeter|-|32bit
control device hw:0
configuring for 96000Hz, period = 1024 frames, buffer = 2 periods
ALSA: final selected sample format for capture: 32bit little-endian
ALSA: use 2 periods for capture
ALSA: final selected sample format for playback: 32bit little-endian
ALSA: use 2 periods for playback
12:12:44.933 Could not connect to JACK server as client. Please check the messages window for more info.
JACK tmpdir identified as [/dev/shm]
Trying to figure out what gives, the limits.conf stuff I added for both the audio group and my regular user name. Still nada.
The card is an M-Audio Audiophile 2496.
And ideas?
Oh yes, and I checked, /dev/shm is mod 777 and all the /dev/snd stuff is owned by root:audio.
I’m at a loss.
Joined: 2007-11-15