How to fix Google Hangout Screen Sharing on Ubuntu 17.10

After I upgraded to Ubuntu 17.10 I was not able to share my entire screen in Google Hangouts.

Hangout works again

This spoiled the upgrade for me.

Fortunately the solution is quite simple: Wayland is the new default screen server and does not support fullscreen capture.

You can switch back to the XORG screen server: On the login screen click the gear Icon and select “Ubuntu on XORG”.

This resolves the issue.