- Like many distributions, Ubuntu has decided to use <dfn>PulseAudio</dfn> as the
- default audio system. PulseAudio is a rich and capable system that
- provides excellent services for typical users of Linux on the
- desktop. However, it is not capable of the type of performance that
- tools like Ardour require and in particular does not offer the
- possibility of sending audio between applications that can make the
- Linux audio environment a very interesting one.
-</p>
-<p>
- This would not be a problem if it were not for the fact that JACK
- will not run correctly (if at all) if it needs to use the same
- soundcard/audio interface that PulseAudio is using. And since on
- Ubuntu, PulseAudio is configured by default to always use the
- (typically single) audio interface on your computer, this is a bit
- of a problem.
-</p>
-<p>
- The developers of JACK and PulseAudio got together in 2009 and
- agreed upon a mechanism by which PulseAudio and JACK could cooperate
- in their use of a single soundcard. Whether or not PulseAudio is running by
- default, when JACK starts up it sends out a request to use the
- soundcard. If PulseAudio is running, it will give up its use of the
- soundcard to allow JACK to take over (and can optionally be told to
- route its own audio through JACK). When JACK finishes, it sends out
- another message, and PulseAudio can once again use the soundcard
- directly.
+ This would not be a problem if it were not for the fact that JACK will not
+ run correctly (if at all) if it needs to use the same soundcard/audio
+ interface that PulseAudio is using. And since, PulseAudio on Ubuntu is
+ configured by default to always use the (typically single) audio interface on
+ the computer, this is a bit of a problem.