This is an update to an earlier post. Thanks to contributions on this thread and related bugfix. The Qubes operating system aims to be reasonably secure through isolation. One example of isolation: one virtual machine (“Qube”) runs the windowing environment, while other VMs run applications, which are displayed in that environment. This separation from the X11 environment means that an application, like skype or bluejeans, cannot share the screen. This is by design, and highlights the security that makes me a fan of Qubes.
screenshare
NOTE: The setting described below have security implications. See https://groups.google.com/d/msg/qubes-users/3amtMOIBTgI/rXLXmbM5AAAJ for discussion. At the moment, I am not recommending this approach. I’ll update here if I am able to improve on it. Caveat emptor! UPDATE: See revised post. The Qubes operating system aims to be reasonably secure through isolation. One example of isolation: one Qubes virtual machine runs the windowing environment, while other VMs run applications displayed in that environment.