Speakers don't un-mute after muting the audio I recently installed Bluedevil on my Fedora 21 XFCE notebook to be able to use my AS-600 bluetooth headphones, and they worked pretty well, the problem now is that whenever I mute the audio by running `amixer set Master toggle -q` I can't un-mute it by running it again, I have to head to the mixer and manually un-mute it by clicking on the small speaker icon under the speaker: Before "muting": !enter image description here In "muted" state: !enter image description here After "un-muting": !enter image description here As you can see, the `amixer set Master toggle -q` command mutes both the Master and Speaker channels but it only un-mutes the Master channel when run again, I have to note that this didn't happen before installing bluedevil and pulseaudio-bluetooth, and uninstalling them just didn't do the trick.

There seems to be some bug between ALSA and Pulseaudio.

To fix this, set the device flag to pulse:


amixer -D pulse sset Master toggle -q


(source: arch wiki)