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<?xml version="1.0"?><!--*-nxml-*-->
<!DOCTYPE manpage SYSTEM "xmltoman.dtd">
<?xml-stylesheet type="text/xsl" href="xmltoman.xsl" ?>
<!--
This file is part of PulseAudio.
PulseAudio is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
-->
<manpage name="pulse-daemon.conf" section="5" desc="PulseAudio daemon configuration file">
<synopsis>
<p><file>~/.pulse/daemon.conf</file></p>
<p><file>@pulseconfdir@/daemon.conf</file></p>
</synopsis>
<description>
<p>The PulseAudio sound server reads configuration directives from
a file <file>~/.pulse/daemon.conf</file> on startup and when that
file doesn't exist from
<file>@pulseconfdir@/daemon.conf</file>. Please note that the
server also reads a configuration script on startup
<file>default.pa</file> which also contains runtime configuration
directives.</p>
<p>The configuration file is a simple collection of variable
declarations. If the configuration file parser encounters either ;
or # it ignores the rest of the line until its end.</p>
<p>For the settings that take a boolean argument the values
<opt>true</opt>, <opt>yes</opt>, <opt>on</opt> and <opt>1</opt>
are equivalent, resp. <opt>false</opt>, <opt>no</opt>,
<opt>off</opt>, <opt>0</opt>.</p>
</description>
<section name="General Directives">
<option>
<p><opt>daemonize= </opt> Daemonize after startup. Takes a
boolean value, defaults to <opt>no</opt>. The <opt>--daemonize</opt>
command line option takes precedence.</p>
</option>
<option>
<p><opt>fail=</opt> Fail to start up if any of the directives
in the configuration script <file>default.pa</file>
fail. Takes a boolean argument, defaults to <opt>yes</opt>. The <opt>--fail</opt> command line
option takes precedence.</p>
</option>
<option>
<p><opt>allow-module-loading=</opt> Allow/disallow module
loading after startup. This is a security feature that if
dsabled makes sure that no further modules may be loaded into
the PulseAudio server after startup completed. It is recommended
to disable this when <opt>system-instance</opt> is
enabled. Please note that certain features like automatic
hot-plug support will not work if this option is enabled. Takes
a boolean argument, defaults to <opt>yes</opt>. The
<opt>--disallow-module-loading</opt> command line option takes
precedence.</p>
</option>
<option>
<p><opt>allow-exit=</opt> Allow/disallow exit on user
request. Defaults to <opt>yes</opt>.</p>
</option>
<option>
<p><opt>resample-method=</opt> The resampling algorithm to
use. Use one of <opt>src-sinc-best-quality</opt>,
<opt>src-sinc-medium-quality</opt>, <opt>src-sinc-fastest</opt>,
<opt>src-zero-order-hold</opt>, <opt>src-linear</opt>,
<opt>trivial</opt>, <opt>speex-float-N</opt>,
<opt>speex-fixed-N</opt>, <opt>ffmpeg</opt>. See the
documentation of libsamplerate for an explanation for the
different src- methods. The method <opt>trivial</opt> is the most basic
algorithm implemented. If you're tight on CPU consider using
this. On the other hand it has the worst quality of them
all. The Speex resamplers take an integer quality setting in the
range 0..9 (bad...good). They exist in two flavours: <opt>fixed</opt> and
<opt>float</opt>. The former uses fixed point numbers, the latter relies on
floating point numbers. On most desktop CPUs the float point
resmampler is a lot faster, and it also offers slightly better
quality. See the output of <opt>dump-resample-methods</opt> for
a complete list of all available resamplers. Defaults to
<opt>speex-float-3</opt>. The <opt>--resample-method</opt>
command line option takes precedence. Note that some modules
overwrite or allow overwriting of the resampler to use.</p>
</option>
<option>
<p><opt>enable-remixing=</opt> If disabled never upmix or
downmix channels to different channel maps. Instead, do a simple
name-based matching only. Defaults to <opt>yes.</opt></p>
</option>
<option>
<p><opt>enable-lfe-remixing=</opt> if disabeld when upmixing or
downmixing ignore LFE channels. When this option is dsabled the
output LFE channel will only get a signal when an input LFE
channel is available as well. If no input LFE channel is
available the output LFE channel will always be 0. If no output
LFE channel is available the signal on the input LFE channel
will be ignored. Defaults to <opt>no</opt>.</p>
</option>
<option>
<p><opt>use-pid-file=</opt> Create a PID file in
<file>/tmp/pulse-$USER/pid</file>. Of this is enabled you may
use commands like <opt>--kill</opt> or <opt>--check</opt>. If
you are planning to start more than one PulseAudio process per
user, you better disable this option since it effectively
disables multiple instances. Takes a boolean argument, defaults
to <opt>yes</opt>. The <opt>--no-cpu-limit</opt> command line
option takes precedence.</p>
</option>
<option>
<p><opt>cpu-limit=</opt> If disabled do not install the CPU load
limiter, even on platforms where it is supported. This option is
useful when debugging/profiling PulseAudio to disable disturbing
SIGXCPU signals. Takes a boolean argument, defaults to
<opt>no</opt>. The <opt>--no-cpu-limit</opt> command line
argument takes precedence.</p>
</option>
<option>
<p><opt>system-instance=</opt> Run the daemon as system-wide
instance, requires root priviliges. Takes a boolean argument,
defaults to <opt>no</opt>. The <opt>--system</opt> command line
argument takes precedence.</p>
</option>
<option>
<p><opt>enable-shm=</opt> Enable data transfer via POSIX
shared memory. Takes a boolean argument, defaults to
<opt>yes</opt>. The <opt>--disable-shm</opt> command line
argument takes precedence.</p>
</option>
<option>
<p><opt>shm-size-bytes=</opt> Sets the shared memory segment
size for the daemon, in bytes. If left unspecified or is set to 0
it will default to some system-specific default, usually 64
MiB. Please note that usually there is no need to change this
value, unless you are running an OS kernel that does not do
memory overcommit.</p>
</option>
<option>
<p><opt>lock-memory=</opt> Locks the entire PulseAudio process
into memory. While this might increase drop-out safety when used
in conjunction with real-time scheduling this takes away a lot
of memory from other processes and might hence considerably slow
down your system. Defaults to <opt>no</opt>.</p>
</option>
<option>
<p><opt>flat-volumes=</opt> Enable 'flat' volumes, i.e. where
possible let the sink volume equal the maximum of the volumes of
the inputs connected to it. Takes a boolean argument, defaults
to <opt>yes</opt>.</p>
</option>
</section>
<section name="Scheduling">
<option>
<p><opt>high-priority=</opt> Renice the daemon after startup to
become a high-priority process. This a good idea if you
experience drop-outs during playback. However, this is a certain
security issue, since it works when called SUID root only, or
RLIMIT_NICE is used. root is dropped immediately after gaining
the nice level on startup, thus it is presumably safe. See
<manref section="1" name="pulseaudio"/> for more
information. Takes a boolean argument, defaults to <opt>yes</opt>. The <opt>--high-priority</opt>
command line option takes precedence.</p>
</option>
<option>
<p><opt>realtime-scheduling=</opt> Try to acquire SCHED_FIFO
scheduling for the IO threads. The same security concerns as
mentioned above apply. However, if PA enters an endless loop,
realtime scheduling causes a system lockup. Thus, realtime
scheduling should only be enabled on trusted machines for
now. Please not that only the IO threads of PulseAudio are made
real-time. The controlling thread is left a normally scheduled
thread. Thus enabling the high-priority option is orthogonal.
See <manref section="1" name="pulseaudio"/> for more
information. Takes a boolean argument, defaults to <opt>yes</opt>. The
<opt>--realtime</opt> command line option takes precedence.</p>
</option>
<option>
<p><opt>realtime-priority=</opt> The realtime priority to
acquire, if <opt>realtime-scheduling</opt> is enabled. Note: JACK uses 10
by default, 9 for clients. Thus it is recommended to choose the
PulseAudio real-time priorities lower. Some PulseAudio threads
might choose a priority a little lower or higher than the
specified value. Defaults to <opt>5</opt>.</p>
</option>
<option>
<p><opt>nice-level=</opt> The nice level to acquire for the
daemon, if <opt>high-priority</opt> is enabled. Note: on some
distributions X11 uses -10 by default. Defaults to -11.</p>
</option>
</section>
<section name="Idle Times">
<option>
<p><opt>exit-idle-time=</opt> Terminate the daemon after the
last client quit and this time in seconds passed. Use a negative value to
disable this feature. Defaults to 20. The
<opt>--exit-idle-time</opt> command line option takes
precedence.</p>
</option>
<option>
<p><opt>scache-idle-time=</opt> Unload autoloaded sample cache
entries after being idle for this time in seconds. Defaults to
20. The <opt>--scache-idle-time</opt> command line option takes
precedence.</p>
</option>
</section>
<section name="Paths">
<option>
<p><opt>dl-search-path=</opt> The path were to look for dynamic
shared objects (DSOs/plugins). You may specify more than one
path seperated by colons. The default path depends on compile
time settings. The <opt>--dl-search-path</opt> command line
option takes precedence. </p>
</option>
<option>
<p><opt>default-script-file=</opt> The default configuration
script file to load. Specify an empty string for not loading a
default script file. The default behaviour is to load
<file>~/.pulse/default.pa</file>, and if that file does not
exist fall back to the system wide installed version
<file>@pulseconfdir@/default.pa</file>. If run in system-wide
mode the file <file>@pulseconfdir@/system.pa</file> is used
instead. If <opt>-n</opt> is passed on the command line
or <opt>default-script-file=</opt> is disabled the default
configuration script is ignored.</p>
</option>
<option>
<p><opt>load-default-script-file=</opt> Load the default
configuration script file as specified
in <opt>default-script-file=</opt>. Defaults to <opt>yes</opt>.</p>
</option>
</section>
<section name="Logging">
<option>
<p><opt>log-target=</opt> The default log target. Use either
<opt>stderr</opt>, <opt>syslog</opt> or <opt>auto</opt>. The
latter is equivalent to <opt>sylog</opt> in case
<opt>daemonize</opt> is enabled, otherwise to
<opt>stderr</opt>. Defaults to <opt>auto</opt>. The
<opt>--log-target</opt> command line option takes
precedence.</p>
</option>
<option>
<p><opt>log-level=</opt> Log level, one of <opt>debug</opt>,
<opt>info</opt>, <opt>notice</opt>, <opt>warning</opt>,
<opt>error</opt>. Log messages with a lower log level than
specified here are not logged. Defaults to
<opt>notice</opt>. The <opt>--log-level</opt> command line
option takes precedence. The <opt>-v</opt> command line option
might alter this setting.</p>
</option>
<option>
<p><opt>log-meta=</opt> With each logged message log the code
location the message was generated from. Defaults to
<opt>no</opt>.</p>
</option>
<option>
<p><opt>log-time=</opt> With each logged messages log the
relative time since startup. Defaults to <opt>no</opt>.</p>
</option>
<option>
<p><opt>log-backtrace=</opt> When greater than 0, with each
logged message log a code stack trace up the the specified
number of stack frames. Defaults to <opt>0</opt>.</p>
</option>
</section>
<section name="Resource Limits">
<p>See <manref name="getrlimit" section="2"/> for
more information. Set to -1 if PulseAudio shall not touch the resource
limit. Not all resource limits are available on all operating
systems.</p>
<option>
<p><opt>rlimit-as</opt> Defaults to -1.</p>
</option>
<option>
<p><opt>rlimit-rss</opt> Defaults to -1.</p>
</option>
<option>
<p><opt>rlimit-core</opt> Defaults to -1.</p>
</option>
<option>
<p><opt>rlimit-data</opt> Defaults to -1.</p>
</option>
<option>
<p><opt>rlimit-fsize</opt> Defaults to -1.</p>
</option>
<option>
<p><opt>rlimit-nofile</opt> Defaults to 256.</p>
</option>
<option>
<p><opt>rlimit-stack</opt> Defaults to -1.</p>
</option>
<option>
<p><opt>rlimit-nproc</opt> Defaults to -1.</p>
</option>
<option>
<p><opt>rlimit-locks</opt> Defaults to -1.</p>
</option>
<option>
<p><opt>rlimit-sigpending</opt> Defaults to -1.</p>
</option>
<option>
<p><opt>rlimit-msgqueue</opt> Defaults to -1.</p>
</option>
<option>
<p><opt>rlimit-memlock</opt> Defaults to 16 KiB. Please note
that the JACK client libraries may require more locked
memory.</p>
</option>
<option>
<p><opt>rlimit-nice</opt> Defaults to 31. Please make sure that
the default nice level as configured with <opt>nice-level</opt>
fits in this resource limit, if <opt>high-priority</opt> is
enabled.</p>
</option>
<option>
<p><opt>rlimit-rtprio</opt> Defaults to 9. Please make sure that
the default real-time priority level as configured with
<opt>realtime-priority=</opt> fits in this resource limit, if
<opt>realtime-scheduling</opt> is enabled. The JACK client
libraries require a real-time prority of 9 by default. </p>
</option>
<option>
<p><opt>rlimit-rttime</opt> Defaults to 1000000.</p>
</option>
</section>
<section name="Default Device Settings">
<p>Most drivers try to open the audio device with these settings
and then fall back to lower settings. The default settings are CD
quality: 16bit native endian, 2 channels, 44100 Hz sampling.</p>
<option>
<p><opt>default-sample-format=</opt> The default sampling
format. Specify one of <opt>u8</opt>, <opt>s16le</opt>,
<opt>s16be</opt>, <opt>s24le</opt>, <opt>s24be</opt>,
<opt>s24-32le</opt>, <opt>s24-32be</opt>, <opt>s32le</opt>,
<opt>s32be</opt> <opt>float32le</opt>, <opt>float32be</opt>,
<opt>ulaw</opt>, <opt>alaw</opt>. Depending on the endianess of
the CPU the formats <opt>s16ne</opt>, <opt>s16re</opt>,
<opt>s24ne</opt>, <opt>s24re</opt>, <opt>s24-32ne</opt>,
<opt>s24-32re</opt>, <opt>s32ne</opt>, <opt>s32re</opt>,
<opt>float32ne</opt>, <opt>float32re</opt> (for native,
resp. reverse endian) are available as aliases.</p>
</option>
<option>
<p><opt>default-sample-rate=</opt> The default sample frequency.</p>
</option>
<option>
<p><opt>default-sample-channels</opt> The default number of channels.</p>
</option>
<option>
<p><opt>default-channel-map</opt> The default channel map.</p>
</option>
</section>
<section name="Default Fragment Settings">
<p>Some hardware drivers require the hardware playback buffer to
be subdivided into several fragments. It is possible to change
these buffer metrics for machines with high scheduling
latencies. Not all possible values that may be configured here are
available in all hardware. The driver will to find the nearest
setting supported. Modern drivers that support timer-based
scheduling ignore these options.</p>
<option>
<p><opt>default-fragments=</opt> The default number of
fragments. Defaults to 4.</p>
</option>
<option>
<p><opt>default-fragment-size-msec=</opt>The duration of a
single fragment. Defaults to 25ms (i.e. the total buffer is thus
100ms long).</p>
</option>
</section>
<section name="Authors">
<p>The PulseAudio Developers <@PACKAGE_BUGREPORT@>; PulseAudio is available from <url href="@PACKAGE_URL@"/></p>
</section>
<section name="See also">
<p>
<manref name="pulse-client.conf" section="5"/>, <manref name="default.pa" section="5"/>, <manref name="pulseaudio" section="1"/>, <manref name="pacmd" section="1"/>
</p>
</section>
</manpage>
|