1998-10-06 12:19:04 +02:00
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.TH AMIXER 1 "30 Sep 1998"
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.SH NAME
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amixer \- commandline mixer for ALSA soundcard driver
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.SH SYNOPSIS
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\fBamixer\fP [\fI-c\fP card] [\fI-d\fP dev] device [vol|L:R]
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[\fImute\fP|\fIunmute\fP] [\fIrec\fP|\fInorec\fP]
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.SH DESCRIPTION
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\fBamixer\fP allows command-line control of the mixer for the ALSA
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soundcard driver. The settings can be written to or read from a resource
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file, making \fBamixer\fP ideal for invoking via a boot-time script.
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\fBamixer\fP supports multiple soundcards with multiple devices.
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.SH INVOKING
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\fBamixer\fR with no arguments will display the current mixer settings
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for the default soundcard and device. This is a good way to see a list
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of the devices (aka mixer channels) you can control.
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\fImute, unmute, rec,\fP and \fInorec\fP are used to toggle muting and
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recording for the device specified.
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The volume can be specified either as a percentage from 0 to 100, or as
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a
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colon-separated pair of percentages if independent control of Left and
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Right
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is
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needed. A mixer device must be specified. Only one device can be
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controlled at a time, except when using the \fI-r\fP flag.
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.SS Options
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.TP
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[\fI-c\fP card] [\fI-d\fP device]
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Select the card and device number to control. Cards are numbered from 1
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(the default). Devices are numbered from 0 (the default). Note that
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here,
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"device" does \fBnot\fP mean "mixer channel", but refers to the
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architecture of your soundcard. Many
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soundcards will only have device 0. Some more complex cards may have
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more
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devices. Try using \fI-d 1\fP and if anything useful happens, now you
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know
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more
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than I do. :)
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.TP
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\fI-h\fP
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Help: show syntax.
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.TP
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[\fI-p\fP path] \fI-r\fP
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1999-01-30 18:28:44 +01:00
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Read settings from $HOME/.amixerrc or from optional <path>. If <path>
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is ``\-'', reads from the standard input.
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1998-10-06 12:19:04 +02:00
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.TP
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1999-01-30 18:28:44 +01:00
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[\fI-p\fP path] \fI-w\fP
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Write the current mixer settings into $HOME/.amixerrc or optional <path>.
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If <path> is ``\-'', writes to the standard output.
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1998-10-06 12:19:04 +02:00
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.TP
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\fI-q\fP
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Quiet mode. Do not show results of changes.
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.SS
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Example:
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.RS
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\fBamixer -c 2 line-in 80:50 unmute rec\fR
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.ID
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will set the second soundcard's line-in left volume to 80%, line-in
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right volume to 50%, unmute it, and select it as a source for recording.
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.SH FILES
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.I
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$HOME/.amixerrc
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is automatically generated from the current mixer settings by invoking
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amixer with the
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.I
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-w
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flag. It should probably not be modified by hand.
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.SH BUGS
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None known.
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.SH AUTHOR
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\fBamixer\fP is by Andy Lo A Foe <arloafoe@cs.vu.nl>.
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This document is by Paul Winkler <zarmzarm@erols.com>.
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