How to play audio to an externally connected screen via HDMI, Display Port or USB-C.
Please note - Linux will not automatically switch the audio output to external devices that are connected.
1 Settings
Open the GNOME Launcher and click on Settings.
2 Sound
From here, navigate to Sound where a list of output devices will be displayed.
3 Select output
Simply select the output device you wish to use from the output tab.