x2go

Keyboard shortcuts for X2Go Client

Ctrl + Alt + T: terminate session / disconnect
Ctrl + Alt + F: toggle fullscreen/windowed
Ctrl + Alt + M: minimize or maximize fullscreen window
Ctrl + Alt + arrow keys: move viewport (when remote screen is bigger than client window)

Install Client

Install x2Go Client in Ubuntu

Install Server

Install x2go server in Debian 9
Install x2go Server in Ubuntu 16.04
Install MATE Desktop in Ubuntu