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:
In "muted" state:
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.