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I added a 2nd screen to my computer. Now unity is not working. I can only login if I use unity 2d.

Any idea on how to solve this?


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Can you give more info ? Do you have the drivers and are you setting this up using the correct dialog "sudo nvidia-settings" – Mark Kirby Aug 21 '12 at 0:22
Hi Mark. I have the drivers and I used the correct dialog to configure it. Ubuntu 2D works, but 3D does not. In 3D i have no menu bar, nor bar to the left nor windows decoration, etc. . Thanks! – Ignacio Aug 21 '12 at 3:32
All I can suggest at this time is check the resolution of both screens and make sure both are set to the least capable displays settings, for example if monitor 1 is 1920x1080 but monitor 2 is only 1280x800 both must be set to 1280x800. Also can you open the dash ? press the windows key to try. Also dose this help ? – Mark Kirby Aug 21 '12 at 13:10
You may also add the Nvidia PPA to update the driver, this fixes many nvida issues sudo apt-add-repository ppa:ubuntu-x-swat/x-updates then do sudo apt-get update and finally sudo apt-get dist-upgrade You will see the updae in the output and then rebbot. – Mark Kirby Aug 21 '12 at 13:16
up vote 1 down vote accepted

It works I updated to the latest drivers and updated my xorg.conf.

This is my xorg.conf file:

nvidia-settings: X configuration file generated by nvidia-settings
nvidia-settings:  version 302.17  (buildd@rhenium)  Sun Jun 17 23:26:33 UTC 2012

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    Option         "Xinerama" "0"

Section "Files"

Section "InputDevice"
    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/psaux"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"

Section "InputDevice"
    # generated from default
    Identifier     "Keyboard0"
    Driver         "kbd"

Section "Monitor"
    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Acer X233H"
    HorizSync       31.0 - 83.0
    VertRefresh     56.0 - 76.0
    Option         "DPMS"

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "ION"

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "Stereo" "0"
    Option         "nvidiaXineramaInfoOrder" "DFP-0"
    Option         "metamodes" "DFP-0: nvidia-auto-select +0+0, DFP-1: nvidia-auto-select +0+0"
    SubSection     "Display"
        Depth       24
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