2010-05-11 20:30:48 +02:00
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JACK is a low-latency audio server, written primarily for Linux. It can
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2010-04-09 02:43:31 +02:00
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connect a number of different applications to an audio device, as well as
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allow them to share audio among themselves. Its clients can run in their
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own processes (ie. as a normal application) or they can run within a JACK
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server instance (i.e. as a "plugin").
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2010-05-11 20:01:18 +02:00
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2010-04-09 02:43:31 +02:00
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jackd has to run with realtime priviledges. One way to do this on Slackware
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would be to use set_rlimits. Since 12.2 there's another way. If you have
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a filesystem that supports posix capabilities (reiserfs does not), you
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can grant jackd the rights to run in realtime mode, even when started as
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normal user with the following command:
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2010-05-12 17:37:05 +02:00
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2010-05-13 00:21:21 +02:00
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setcap cap_ipc_lock,cap_sys_nice=ep /usr/bin/jackd
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2010-05-12 17:37:05 +02:00
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2010-04-09 02:43:31 +02:00
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If you use qjackctl to start jack, it will need the same capabilities set
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to be able to start jack as non-root user. You can use the same command
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just with 'qjackctl' instead of 'jackd'
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jack optionally uses libsndfile, libffado and celt, which are all available
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at SlackBuilds.org.
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