I have installed Ubuntu 14.04.1 with gnome-shell version 3.10.4. I can attach a second monitor to my laptop and it is recognized. If I configure it with the nvidia-settings at the right of my laptop then all works fine (the extention of the display works as an extention on the right, not dual). Now what I want is to have the second monitor configured over the laptop-display. When I'm not using gnome-shell, it works correct (I can drag an application from the bottom display to the top normally) but with gnome-shell I have to press Ctrl+Shift+ mouse help, and resize properly the application size. This is for me an enforcing. Is there a way to make that gnome-shell work properly with a bottom/top monitor?