Just installed Ubuntu 12.04.5 because I gave up on 14. Only one of my dual monitors (both HP EliteDisplay E231) is working. When I go to System Settings > Displays I only see my laptop and the first monitor(vga), but not my second (dvi)

Checked out NVIDIA X Server Settings, also nothing

I did a clean install with ubuntu 12.04, I ran apt-get update. I have NVIDIA driver version 331-updates). I have a Lenovo T530 and was running Dual screens with Windows 7 before. Heres my xorg.conf file: Section "ServerLayout" Identifier "layout" Screen 0 "nvidia" Inactive "intel" EndSection

Section "Device" Identifier "nvidia" Driver "nvidia" BusID "PCI:1@0:0:0" EndSection

Section "Screen" Identifier "nvidia" Device "nvidia" # The internal display might not be connected # to the nvidia card but we definitely want # to be able to connect external displays later #Option "AllowEmptyInitialConfiguration" "on" Option "UseDisplayDevice" "none" EndSection

Section "Device" Identifier "intel" Driver "modesetting" EndSection

Section "Screen" Identifier "intel" Device "intel" EndSection

I wish I could post screen shots but apparently I'm not allowed to just yet. Let me know if you guys need more info. Thank you.

  • Also detect display does nothing – Danny Kodeih Apr 9 '15 at 18:42

Dang, I'm not at work right now but I'm also using a Lenovo there and had similar problems with Mint Cinnamon.

AFAIR correctly you can use the Fn-Keys to put the Screen to an external monitor, might be Fn5 or Fn6.

This should most hopefully detect the third one. It sounds ridiculous, but I could only use the internal display and one external display, or shut off the internal one and use a second external display.

But I have to admit, I'm not sure if mine has a nvidia card in it. So it might be not the solution for your laptop.

| improve this answer | |
  • Thank you! It looks to me that NVIDIA X Server Settings doesn't even recognize the screen that is working. In the X Server Display Configuration tab the Layout box shows "X Screen 0 (No Scanout)" Also I turned off the laptop screen (at work I only use the dual external screens and have the laptop closed on a dock where all external devices are plunged into. Still only one screen displayed. – Danny Kodeih Apr 9 '15 at 19:47
  • If I find the time tomorrow I try look for my xserver config and post it to you to try or at least compare. – s1mmel Apr 9 '15 at 21:53

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