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12.1 amixer

Provide an emacs front-end to amixer, the sound mixer in ALSA that is used to configure the audio device. Note that amixer also works on pipewire-based systems. The main entry point is command amixer bound to C-e). When called for the first time, this command builds up a database of available controls on the default audio device. These control names are then available for completion in the minibuffer. Pick a desired control, e.g., "master playback volume", and this displays a prompt with the current value. Enter the new value and press <RETURN>. To reset all controls to their default values, Press C-j.

12.1.1 Amixer Commands

12.1.1.1 amixer

Command: amixer (&optional refresh)
C-e ( 
ALSA settings.
Interactive prefix arg refreshes cache.

(fn &optional REFRESH)

12.1.1.2 amixer-query

Command: amixer-query (&optional refresh) 
Show setting for specified control.

(fn &optional REFRESH)

12.1.1.3 amixer-store

Command: amixer-store 
Persist  amixer.

12.1.1.4 amixer-volume-adjust

Command: amixer-volume-adjust
C-e 4
C-e 3 
Adjust volume continuously.
Press C-e 3 to lower volume; C-e 4 to increase it. Subsequent presses
of 3 and 4 lower or raise volume.

12.1.1.5 amixer-volume-down

Command: amixer-volume-down (&optional prompt)
<XF86AudioLowerVolume>
C-<f1> 
Lower Master volume by amixer-volume-step.
Interactive prefix arg ‘PROMPT’ reads percentage as a number

(fn &optional PROMPT)

12.1.1.6 amixer-volume-up

Command: amixer-volume-up (&optional prompt)
<XF86AudioRaiseVolume>
C-<f2> 
Raise Master volume by amixer-volume-step.
Interactive prefix arg ‘PROMPT’ reads percentage as a number

(fn &optional PROMPT)

12.1.2 amixer Options

Variable: User Option amixer-volume-step 
Step-size for volume change.

Default Value:

1

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