Have you tried using pavucontrol?
I have an issue with sound on my laptop with the MATE desktop and an
external monitor. Often when I login to the laptop I'll have no sound
and the mate_volume_applet doesn't change the volume. Using pavucontrol
I determined that the problem was the monitor pl
Lately when I install updates and reboot, I'll randomly
have no sound when I log back in. I'm supposed to get
sound output on my HDMI interface (being run by the
nvidia binary driver from rpmfusion).
If I run "gnome-control-center sound", it will show
as currently using a dummy device, and if I tr