Unable to detect second display via HDMI with NVIDIA X Server Settings?

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http://askubuntu.com – Under bumblebee I was able to run nvidia-settings. I have two dell monitors which on win7 I am able to use by using one via VGA and the other via HDMI. In ubuntu, I can only use one with VGA as nothing happens when I plug in the other one via HDMI even doing detect displays in nvidia-settings. How can I get it to be detected? Here are some screenshots of my nvidia-settings: Thanks (HowTos)