Solution to Unity Desktop Fullscreen Graphical Glitch
You may find that your out of the box installation of Unity Desktop has the following glitch:
- Connect a second screen
- Fullscreen a window on one of those screens
- Do something on the other screen e.g. focusing or maximising a window
- Install CompizConfig
- Utility → Workarounds
- Set "Force full screen redraws (buffer swap) on repaint" to true.