I'm setting this to "Wishlist", because it's not a currently supported way to mute/unmute the system, at least not when PulseAudio is running.
The supported way would be to use "pactl set-sink-mute" followed by sink name/index and "toggle". "amixer -D pulse" should probably work as well. I do understand that it is a bit confusing that muting works but not unmuting, so if anyone wants to submit a patch against PulseAudio that would improve this behaviour, feel free to give it a try. ** Changed in: pulseaudio (Ubuntu) Importance: Undecided => Wishlist -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/878986 Title: amixer -q sset Master toggle does mute, but does not unmute! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/878986/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs