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@ -1,3 +1,20 @@
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USING ALSA DIRECTLY
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Switch to root account.
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Install the required packages:
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yum install alsa-plugins-jack
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Add yourself to the jackuser group.
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usermod -a -G jackuser "<your username>"
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Start the jack daemon (your parameters may be different):
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jackd -R -P4 -dalsa -r44100 -p512 -n4 -D -Chw:0 -Phw:0
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or use
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qjackctl -s
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if you have it installed and configured.
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INTEGRATE JACK WITH PULSEAUDIO
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The original text is placed at:
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@ -6,7 +23,7 @@ The original text is placed at:
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Switch to root account.
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Install the required packages:
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yum install pulseaudio-module-jack alsa-plugins-jack jack-audio-connection-kit
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yum install pulseaudio-module-jack alsa-plugins-jack
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Add yourself to the pulse-rt and jackuser groups.
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usermod -a -G pulse-rt,jackuser "<your username>"
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@ -38,17 +55,10 @@ Start the pulseaudio daemon:
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Now everything should work.
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USING ALSA DIRECTLY
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Due to big amount of text lines and a few necessary graphics here is only link
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to very useful article about jack-audio-connection-kit and ALSA. So, go by
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following link:
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http://www.legg.uklinux.net/rosegarden_sound_howto_fc7.html
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RUNNING JACK SERVER IN REALTIME MODE
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NOTE: this chapter describes steps for older Fedora vesions.
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NOTE: This chapter explains why you have done the above changes in more detail.
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It is kept for informational purposes.
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The JACK server jackd has the capability to run in a real-time mode
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which greatly decreases the chance of audio glitches. The real-time mode
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@ -66,6 +76,13 @@ configuration files can decrease the security of your system.
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Documentation specific to the resource limits PAM module can be found at
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http://www.kernel.org/pub/linux/libs/pam/Linux-PAM-html/pam-6.html#ss6.12
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Alternatively, one can create a new file
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/etc/security/limits.d/<priority>-<name>.conf
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that contains the resource limits for individual users and/or groups. The
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jack-audio-connection-kit package that comes with Fedora contains the file
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/etc/security/limits.d/99-jack.conf
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that does this job for you.
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The resource limits that need to be changed to allow jackd to run in
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realtime mode are named rtprio and memlock. To increase the limits for a
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specific user named fred you would add the following to
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@ -108,6 +125,6 @@ virtual memory (kbytes, -v) unlimited
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file locks (-x) unlimited
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file locks (-x) unlimited
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Keep in mind that you may have to re-login before changes to limits.conf
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take effect.
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Keep in mind that you may have to re-login before changes to limits.conf,
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or additions to the limits.d/ directory to take effect.
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Orcan Ogetbil
14 years ago