I'm experiencing the same problem on a fresh install of Ubuntu Mate 20.04 on a Dell XPS 13 9350.
Sound works correctly using the internal speakers. If you plug in analog headphones to the 3.5mm jack, there is no sound from the headphones or the internal speakers. All relevant options are unmuted in Sound Settings. The Speaker Test exhibits the same behaviour. Analog headphones worked correctly on this system under 18.04. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1866194 Title: External audio device shows up in the sound output options but the sound keeps being emitted from the internal laptop speaker, or none at all. To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1866194/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs