I would guess this should be assigned to 'gnome-sound-properties', as changing settings there seems to have fixed the issue. As per Niels comment above, changing the mixer settings to "ALSA" caused the sound to work properly again.
I would guess this should be assigned to 'gnome- sound-propertie s', as changing settings there seems to have fixed the issue. As per Niels comment above, changing the mixer settings to "ALSA" caused the sound to work properly again.