Ctrl + Super + Left/Right not working in Ubuntu 16.04
I used to use the Ctrl + Super + Left / Right before to split my screen space in two windows. It suddenly stopped working. In System Settings -> Keyboard -> Shortcuts, I do see an option to add a key binding along with a command, but what would that command be?
The grid plugin of compiz is responsible for window placement via Ctrl+Super+Arrow Right/Left. For whatever reason, you may not have it enabled.
Install Compiz Config Settings Manager with sudo apt-get install compizconfig-settings-manager and ensure that Grid is checked just like in the screenshot below
