No sound from applications (leap 15.0)

I assume this is something simple I am missing.
I have a new install of Leap 15.0 on new hardware. I cannot get any sound from applications (Firefox/youtube). However, if I run speaker-test I do get sound out of the speakers, whether I run as root or as user.
The applications show up in the mixer, they’re not muted and the mixer can detect plugged/unplugged ports.

Any ideas?



Run ‘pavucontrol’ (you may need to install first) and check the configuration tab settings to make sure the appropriate profile is active.

Might be missing multimedia codecs if you’re experiencing the problem in your browser.