Problem 1 - Messy alt + tab
When I press
Tab, two interfaces show up, with one from unity, and the other from some next window previewer.
Install CompizConfig Settings Manager:
sudo apt-get install compizconfig-settings-manager
Then open it by searching
Window Manager ->
Application Switcher, then disable
Next Window (keyboard).
Problem 2 - superkey + direction key
Coming from CentOS / Ubuntu 18.04, I’ve got used with
left/right to split screen. Back in ubuntu 16.04, this key binding doesn’t seem to work.
CompizConfig Settings Manager installed as is instructed above, we can check
Grid option is checked. Then we can use
left / right to split screen.