alsamixer − soundcard mixer for ALSA soundcard driver, with ncurses interface
alsamixer is an ncurses mixer program for use with the ALSA soundcard drivers. It supports multiple
soundcards with multiple devices.
Help: show available flags.
−c, −−card <card number or identification>
Select the soundcard to use, if you have more than one. Cards are numbered from 0 (the default).
−D, −−device <device identification>
Select the mixer device to control.
−V, −−view <mode>
Select the starting view mode, either playback, capture or all.
Toggle the using of colors.
The top-left corner of alsamixer is the are to show some basic information: the card name, the mixer chip
name, the current view mode and the currently selected mixer item. When the mixer item is switched off,
[Off] is displayed in its name.
Volume bars are located below the basic information area. You can scroll left/right when all controls can’t
be put in a single screen. The name of each control is shown in the bottom below the volume bars. The
currently selected item is drawn in red and/of emphasized.
Each mixer control with volume capability shows a box and the current volume filled in that box. The vol-
ume percentages are displayed below the volume bar for left and right channels. For a mono control, only
one value is shown there.
When a mixer control is turned off, M (mute) appears below the volume bar. When it’s turned on, O in
green appears instead. You can toggle the switch via m key.
When a mixer control has capture capability, the capture flag appears below the volume bar, too. When the
capture is turned off, −−−−−−− is shown. CAPTURE in red appears when the capture switch is turned on.
In addition, L and R letters appear in left and right side to indicate that left and the right channels are turned
Some controls have the enumeration list, and don’t show boxes but only texts which indicate the currently
active item. You can cha