1.\" Copyright (c) 1997 2.\" Mike Pritchard <mpp@FreeBSD.org>. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. Neither the name of the author nor the names of its contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY MIKE PRITCHARD AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" $FreeBSD$ 29.\" 30.Dd June 2, 2014 31.Dt MIXER 8 32.Os 33.Sh NAME 34.Nm mixer 35.Nd set/display soundcard mixer values 36.Sh SYNOPSIS 37.Nm 38.Op Fl f Ar device 39.Op Fl s | S 40.Oo 41.Ar dev 42.Sm off 43.Oo 44.Op Cm + | - 45.Ar lvol 46.Op : Oo Cm + | - Oc Ar rvol 47.Oc 48.Oc 49.Sm on 50.Ar ... 51.Nm 52.Op Fl f Ar device 53.Op Fl s | S 54.Cm recsrc 55.Ar ... 56.Nm 57.Op Fl f Ar device 58.Op Fl s | S 59.Sm off 60.Bro 61.Cm ^ | + | - | = 62.Brc 63.Cm rec 64.Sm on 65.Ar rdev ... 66.Sh DESCRIPTION 67The 68.Nm 69utility is used to set and display soundcard mixer device levels. 70It may 71also be used to start and stop recording from the soundcard. 72The list 73of mixer devices that may be modified are: 74.Bd -ragged -offset indent 75vol, bass, treble, synth, pcm, speaker, line, mic, cd, mix, 76pcm2, rec, igain, ogain, line1, line2, line3, dig1, dig2, dig3, 77phin, phout, video, radio, and monitor. 78.Ed 79.Pp 80Not all mixer devices are available. 81.Pp 82Without any arguments, 83.Nm 84displays the current settings for all supported devices, followed by information 85about the current recording input devices. 86If the 87.Ar dev 88argument is specified, 89.Nm 90displays only the value for that 91.Ar dev . 92.Pp 93To modify the mixer value 94.Ar dev , 95the optional left and right channel settings of 96.Ar lvol Ns Op : Ns Ar rvol 97may be specified. 98The 99.Ar lvol 100and 101.Ar rvol 102arguments may be from 0 - 100. 103Omitting 104.Ar dev 105and including only the channel settings will change the main volume level. 106.Pp 107If the left or right channel settings are prefixed with 108.Cm + 109or 110.Cm - , 111the value following will be used as a relative adjustment, modifying the 112current settings by the amount specified. 113.Pp 114If the 115.Fl s 116flag is used, the current mixer values will be displayed in a format suitable 117for use as the command-line arguments to a future invocation of 118.Nm 119(as above). 120.Pp 121The 122.Fl S 123flag provides the above output without mixing field separators. 124.Pp 125To change the recording device you use one of: 126.Bl -tag -width =rec -offset indent 127.It Cm ^rec 128toggles 129.Ar rdev 130of possible recording devices 131.It Cm +rec 132adds 133.Ar rdev 134to possible recording devices 135.It Cm -rec 136removes 137.Ar rdev 138from possible recording devices 139.It Cm =rec 140sets the recording device to 141.Ar rdev 142.El 143.Pp 144The above commands work on an internal mask. 145After all the options 146have been parsed, it will set then read the mask from the sound card. 147This will let you see EXACTLY what the soundcard is using for the 148recording device(s). 149.Pp 150The option recsrc will display the current recording devices. 151.Pp 152The option 153.Fl f 154.Ar device 155will open 156.Ar device 157as the mixer device. 158.Sh FILES 159.Bl -tag -width /dev/mixer -compact 160.It Pa /dev/mixer 161the default mixer device 162.El 163.Sh SEE ALSO 164.Xr cdcontrol 1 , 165.Xr sound 4 166.Sh HISTORY 167The 168.Nm 169utility first appeared in 170.Fx 2.0.5 . 171.Sh AUTHORS 172.An -nosplit 173Original source by 174.An Craig Metz Aq Mt cmetz@thor.tjhsst.edu 175and 176.An Hannu Savolainen . 177Mostly rewritten by 178.An John-Mark Gurney Aq Mt jmg@FreeBSD.org . 179This 180manual page was written by 181.An Mike Pritchard Aq Mt mpp@FreeBSD.org . 182