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Thread: TUTORIAL: How to run Jack & Pulseaudio at the same time

  1. #1
    Join Date
    Jul 2010

    TUTORIAL: How to run Jack & Pulseaudio at the same time

    HELLO ALL!!!!!!
    (Is this the correct place for this kind of thing? hopefully)
    Anyway, I couldn't find any direct tutorials on this, so I figured it out from bits and pieces I found on the web and simple logic. Pardon my lack of references, I can't remember where I found most of this information. If I recall, most of it's from the same site, if anyone knows which, please post a link. I don't approve of plagiarism haha.

    Basically, what you'll be doing is routing PulseAudio through Jack.
    I'm running Ubuntu 11.04, try this on other distros at your own risk.

    If you're like me, and replaced pulseaudio with alsa, you're gonna want to undo that.
    I don't know exactly what you did if you did it, so I'll leave that part to you.

    First off, install QJackCtl (Available in Ubuntu Software Center) if you haven't already.
    Then install pulseaudio and pulseaudio-module-jack if you haven't already.
    sudo apt-get install pulseaudio pulseaudio-module-jack
    Next, open a terminal instance and type the following:

    sudo gedit /etc/asound.conf
    Open up another terminal instance and type a similar thing:

    sudo gedit $HOME/.asoundrc
    And copy and paste:
    pcm.pulse { 
        type pulse 
    ctl.pulse { 
        type pulse 
    pcm.!default { 
        type pulse 
    ctl.!default { 
        type pulse 
    Save, and exit.

    Now, in the terminal:

    sudo gedit ~/.pulse/
    And add the following:

    load-module module-native-protocol-unix 
    load-module module-jack-sink channels=2 
    load-module module-jack-source channels=2 
    load-module module-null-sink 
    load-module module-stream-restore 
    load-module module-rescue-streams 
    load-module module-always-sink 
    load-module module-suspend-on-idle 
    set-default-sink jack_out 
    set-default-source jack_in
    sudo gedit ~/.pulse/daemon.conf
    default-sample-format = float32le 
    default-sample-rate = 48000 
    realtime-scheduling = yes 
    exit-idle-time = -1
    Save and exit.

    Now, open QJackCtl and open the Settings,
    Change the sample rate to 44100,
    Go to the MISC tab,
    Check the box to start the server on application startup.

    Go to the OPTIONS tab,
    Check "Execute script after startup"
    Copy and paste the following:

    pactl load-module module-jack-sink channels=2; pactl load-module module-jack-source channels=2;pacmd set-default-sink jack_out
    Check "Execute script after shutdown"
    killall jackd
    Now, open System > Preferences > Startup Applications
    Click "Add"
    For the name, type "JackAudio"
    For the command, type "qjackctl"
    Click "Add"
    Make sure the command you just added is checked.
    Now, make sure everything is saved and reboot to see if it's working.

    The downside to this, is in a "Movie player" instance
    when the song or video finishes, you need to open the QJackCtl window, click "Stop" and then "Start"
    in my eyes as a linux-preferring musician: Completely worth it. It doesn't take all that long to do, and I use VLC anyway.

    ENJOY! No more stopping and restarting JACK and reconfiguring audio in your DAW whenever you go from your DAW to an mp3 file and back. BE GRATEFUL.

    Last edited by Arightwizard; August 11th, 2012 at 06:48 PM.


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