Ubuntu
compiz package

  1. Quantal (12.10)
  2. Bug #950160
  3. Comment #24

Comment 24 for bug 950160

Revision history for this message
Omer Akram (om26er) wrote : Re: Keyboard function key to switch between monitors no more works

So the fix works for Unity2D session and not for Unity(3D). probably compiz is doing something here.