Ubuntu – How to enable Compiz effects

Go to:

CompizConfig Settings Manager > Effects

Make SURE Window Decoration is checked.

Try Displex. It provides the same options as the Fusion Icon, and works with Unity/AppIndicators.

(It will also work in most other desktop environments where you can run compiz).

Note, if it does not run try the following:

I installed the deb and tried starting DisPlex from the app menu but nothing
happened. So I ran "indicator-displex" from terminal. At some point it showed
"Value error: gconf key /apps/nautilus/preferences/show_desktop has no value"
so I had to manually add a value and typed
gconftool-2 --set "/apps/nautilus/preferences/show_desktop" --type bool true
ran it again and got the same error for
/apps/gnome-screensaver/idle_activation_enabled,
so the same procedure and that was it.

Taken from Schubibuntu's comment.