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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:

X Server Display Configuration


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You tried to access "Display" from the menu ? Some times in Nvidia X Server doesn't appear both displays. Or try to reboot with botj monitors plug in and then acces Nvidia X Server again or Display from the menu.

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