On most linux distros I can use the Logokey+Arrowkeys to shift the window I'm currently on to one half of the screen. Only the Right arrow and Left arrow keys works for me on Ubuntu.
How can I enable Up Arrow and Down arrow keys to split the windows vertically as well? And also the ability to split the window into one corner (a fourth) of the screen by using the Left/Right and Up/Down arrow keys in sequence.