I am using Kubuntu 17.04. I tried installing i3wm by executing
$sudo apt-get install i3-wm
However, once I logged out, I saw there was no place to switch to i3wm like in Unity. Moreover, The mouse cursor had completely disappeared and I had to log in via the console and remove i3-wm for it to re appear. How do I install i3-wm correctly? Thanks in advance.