I am on a Lenovo W500 with German keyboard layout. I use Ubuntu 12.10 and have configured my keyboard layout to use the Caps Lock as Ctrl. But it does not work. I even tried to reboot my system.
Here is the configuration of my "Keyboard Layout".
My goal is to have Caps Lock and Left Ctrl as Left Ctrl plus the Right Ctrl as Right Ctrl.
You can get all three keys to behave as Ctrl by only checking the
Caps Lock as Ctrl
checkbox. TheAt bottom left
option seems to not work as expected and should be left unchecked.