Ctrl+Alt+O (Organize Imports) not working on Intellij IDEA

I can't use the shortcut for Organize Imports Ctrl+Alt+O action for Intellij IDEA on Ubuntu 14.04.

Note - I'm just posting it to help someone to avoid wasting time.


Solution 1:

The problem was that I had ClipIt 1.4.2 installed and Ctrl+Alt+O is set by default to the Off-line Mode hot-key.

As @mounir indicates in its comment, gpaste gnome-extension also has the same shortcut.