alsamixer
but still nothing, the output device is the HDMI audio of a Radeon HD card.xfce4-mixer
in a lxterminalpavucontrol
pavucontrol
in a lxterminalxfce4-mixer
in a lxterminal.pavucontrol-qt
, a Qt based implementation of the pavucontrol
PulseAudio mixer mentioned in the other answer here. This fits nicely into the Qt-based desktop environment LXQt of the recent Lubuntu versions.pavucontrol-qt
is the default mixer application that can be opened via the volume adjustment panel widget (though you can also configure a different one there). For some reason, it was not installed on my system (maybe because I always install Ubuntu first and then Lubuntu packages on top?). Anyway, you can install it with: