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 plugged into the HDMI port
of my laptop. pavucontrol shows 2 entries under the configuration tab
for built in audio, one for the HDMI port and one for the actual built
in audio. As soon as I disable the HDMI entry the mate_volume_applet
works and I have sound. That is until for some reason the HDMI entry
gets turned on again and I have to disable it again.
Paolo
On 7/4/19 8:53 AM, Tom Horsley wrote:
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 try to switch
to HDMI output (which is listed as a choice), it won't
allow me to test the audio out.
Rebooting and hoping I'll have sound when I come back
has been the only way I've found to fix this so far.
Anyone know if there is some way to re-initialize
audio devices less drastic than rebooting?
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