Topic explains it all. Its not muted from settings.
@ShockvaWe You need to provide more information(Ubuntu distro, QGC version.etc) on how it is not working.
I am using QGC v3.5.0 on Ubuntu 16.04 and it seems to work fine
hi @ Jaeyoung-Lim
i can confirm that no sound is output on QGC v.4.2.6 in Ubuntu v20.04.06 . I am using the docker version of Jonasvautherin