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.TH "JACKD" "1" "@VERSION@" "April 2006" "" |
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.SH "NAME" |
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jackd, jackstart \- JACK Audio Connection Kit sound server |
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jackd \- JACK Audio Connection Kit sound server |
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.SH "SYNOPSIS" |
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\fBjackd\fR [\fIoptions\fR] \fB\-d\fI backend \fR |
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[\fIbackend\-parameters\fR] |
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.br |
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\fBjackstart\fR [\fIoptions\fR] \fB\-d\fI backend \fR |
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[\fIbackend\-parameters\fR] |
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.br |
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\fBjackd \-\-help\fR |
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.SH "DESCRIPTION" |
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\fBjackd\fR invokes the JACK audio server daemon. The \fBjackstart\fR |
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command provides JACK's built\-in support for Linux 2.4.x kernels with |
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the realtime capabilities patch. Use \fBjackd\fR for Linux 2.6.x and |
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all other systems. All parameters are the same. |
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JACK is a low\-latency audio server. Originally written for the |
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\fBjackd\fR is the JACK audio server daemon, a low\-latency audio |
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server. Originally written for the |
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GNU/Linux operating system, it also supports Mac OS X and various Unix |
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platforms. JACK can connect a number of different client applications |
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to an audio device and also to each other. Most clients are external, |
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@@ -67,19 +60,14 @@ that are incompatible across JACK versions (which is rare). |
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.TP |
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\fB\-R, \-\-realtime\fR |
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.br |
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Use realtime scheduling. This is needed for reliable low\-latency |
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performance. On most systems, it requires \fBjackd\fR to run with |
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Use realtime scheduling (default = true). This is needed for reliable low\-latency |
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performance. On many systems, it requires \fBjackd\fR to run with |
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special scheduler and memory allocation privileges, which may be |
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obtained in several ways. The simplest, and least-secure method is to |
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run \fBjackd\fR with root privileges. This means that all JACK |
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clients must also run as root. With a Linux 2.6 kernel, ordinary |
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users can run \fBjackd\fR and its clients using options of the |
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realtime LSM. Linux 2.4 kernels need "POSIX draft capabilities" |
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enabled (see the \fB<linux/capability.h>\fR include file). Using that |
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method, ordinary users who invoke the daemon using \fBjackstart\fR, |
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can later launch JACK clients without running them as root. See |
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.I http://jackit.sourceforge.net/docs/faq.php#a52 |
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for more information. |
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obtained in several ways. |
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.TP |
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\fB\-L, \-\-no-realtime\fR |
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.br |
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Do not use realtime scheduling. |
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.TP |
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\fB\-P, \-\-realtime\-priority \fIint\fR |
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When running \fB\-\-realtime\fR, set the scheduler priority to |
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@@ -447,8 +435,12 @@ Print usage message for the parameters specific to each backend. |
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.br |
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\fBjackd \-d coreaudio \-\-help\fR |
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.br |
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\fBjackd \-d net \-\-help\fR |
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.br |
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\fBjackd \-d dummy \-\-help\fR |
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.br |
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\fBjackd \-d firewire \-\-help\fR |
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.br |
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\fBjackd \-d freebob \-\-help\fR |
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.br |
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\fBjackd \-d oss \-\-help\fR |
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@@ -523,7 +515,7 @@ name to \fBjack_client_open()\fR. |
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.br |
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The official JACK website with news, docs and a list of JACK clients. |
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.PP |
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.I http://lists.sourceforge.net/mailman/listinfo/jackit\-devel |
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.I http://jackaudio.org/email |
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.br |
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The JACK developers' mailing list. Subscribe, to take part in |
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development of JACK or JACK clients. User questions are also welcome, |
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@@ -539,7 +531,7 @@ The Advanced Linux Sound Architecture. |
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.SH "BUGS" |
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Please report bugs to |
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.br |
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.I http://jackit.sourceforge.net/mantis/main_page.php |
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.I http://trac.jackaudio.org/ |
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.SH "AUTHORS" |
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Architect and original implementor: Paul Davis |
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.PP |
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@@ -548,7 +540,8 @@ Richard Guenther, and other members of the Linux Audio Developers group. |
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.PP |
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Programming: Paul Davis, Jack O'Quin, Taybin Rutkin, Stephane Letz, Fernando |
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Pablo Lopez-Lezcano, Steve Harris, Jeremy Hall, Andy Wingo, Kai |
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Vehmanen, Melanie Thielker, Jussi Laako, Tilman Linneweh, Johnny Petrantoni. |
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Vehmanen, Melanie Thielker, Jussi Laako, Tilman Linneweh, Johnny |
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Petrantoni, Torben Hohn. |
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.PP |
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Manpage written by Stefan Schwandter, Jack O'Quin and Alexandre |
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Prokoudine. |