Nvidia X Server Settings only shows 1 screen (laptop + external monitor connected)

Basically i have the same problem like this guy here: http://askubuntu.com/questions/515994/nvidia-x-server-settings-only-shows-1-screen-laptop-external-monitor-connecte

I have got an HDMI monitor connected to my HDMI laptop. In “System settings > Displays” they are 2 separate entities, in “Nvidia X Server Settings” they become just one big screen. Can this be fixed somehow?

My specs:
Ubuntu 14.04, Unity
GeForce 650M, proprietary driver: 331.113
Monitor: Samsung SyncMaster 2494 HS

I use prime to switch between GeForce and Intel graphics, bumblebee is not installed.

Thanks in advance