Hi, in my case, I think it was simply a missing package dependency. Installing the libcanberra-pulse package fixed it for me.
gnome-control should probably add libcanberra-pulse to a proper dependency rather than just recommends since it's likely common that people would want to test speakers and the test silently failing (e.g. control-centre doesn't even warn its missing the libs it needs) makes a user (me for example) get lost (i.e. inspecting ALSA, etc) when the silent test failure misleads. Also noted at the end of: https://bugs.launchpad.net/ubuntu/+source /gnome-media/+bug/736349 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1774904 Title: No defualt sound. Test speakers not working. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1774904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs