Loki wasnt recognizing two of my montiors. I managed to fix that through installing the NVIDIA Driver for my card, but now those two monitors dont have a correct resolution and i cant set it up to be higher as 768p. Those two also get displayed as "Unknown display" in my System Settings -> Displays. They show up as DFP-0 and DFP-4 in nvidia-settings but my working one is showing up properly.

  • What graphics card and monitors are you using? Did you have this problem with Freya?
    – Mike Wild
    Commented Sep 21, 2016 at 8:35

2 Answers 2


You might want to use xrandr to define the monitor resolution. That's what I did for my second monitor (using an Intel card and not Nvidia).


I had the same problem when using driver nvidia-304 after I installed the driver nvidia-361 the problem solved

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