After upgrading to ubuntu 20.04 the hdmi sound stopped working. If I select headphones as audio output they work well, but if I change to HDMI output it doesn't work.
Also I noticed that when I select HDMI output the "configuration" option disappear.
If I select headphones as output, the configurations look like this:
when I select HDMI output, the configurations look like this:
And no sound is played.
What can I do to fix this?
Reboot should not be necessary if you just need to reinitialize pulse, just do a:
killall pulseaudio; rm -rf ~/.config/pulse/* ; rm -rf ~/.pulse*
and you should be good as well.
Suggestion of Raffa works for me on a laptop Asus UX303L !
rm -r ~/.config/pulse/
reboot
and it's ok now
Reboot with the HDMI connected, I had that "bug" or fail, and restarting with the HDMI connected Ubuntu detects the sound, but if you connect the HDMI after the start, it doesn't. It happens since 20.04 (not on 19.10). This is just a workaround.
In my case, following upgrade to Ubuntu 20.04, HDMI output is just not listed anymore in sound settings if I plug or turn on my TV after logging in.
I am not sure this will help with the particular issue you are encountering, but the workaround for me is to open a terminal and run:
pulseaudio -k
then re-open the sound settings, where HDMI output can be selected and works as expected.
Ubuntu 20.04 only shows the option to push audio though HDMI when there it is actually connected (unlike previous versions)
