** Description changed:

- Resubmitting this bug because it seems to have disappeared from this
- site?
- 
- I was asked to find out if nvidia-settings detects the monitors properly
- and it doesn't.
- 
- The original bug I submitted was as follows:
+ For some reason I cannot use Unity3D with the following xorg.conf file:
  
  This is my xorg.conf file
  
  Section "ServerLayout"
  Identifier "Layout0"
  Screen 0 "Screen0" 0 0
  Screen 1 "Screen1" RightOf "Screen0"
  Screen 2 "Screen2" RightOf "Screen1"
  Screen 3 "Screen3" RightOf "Screen2"
  InputDevice "Keyboard0" "CoreKeyboard"
  InputDevice "Mouse0" "CorePointer"
  Option "Xinerama" "1"
  EndSection
  
  Section "Files"
  EndSection
  
  Section "InputDevice"
  Identifier "Mouse0"
  Driver "mouse"
  Option "Protocol" "auto"
  Option "Device" "/dev/psaux"
  Option "Emulate3Buttons" "no"
  Option "ZAxisMapping" "4 5"
  EndSection
  
  Section "InputDevice"
  Identifier "Keyboard0"
  Driver "kbd"
  EndSection
  
  Section "Monitor"
  Identifier "Monitor0"
  VendorName "Unknown"
  ModelName "Acer AL1916"
  HorizSync 31.0 - 83.0
  VertRefresh 56.0 - 75.0
  Option "DPMS"
  EndSection
  
  Section "Monitor"
  Identifier "Monitor1"
  VendorName "Unknown"
  ModelName "Acer AL1916"
  HorizSync 31.0 - 83.0
  VertRefresh 56.0 - 75.0
  Option "DPMS"
  EndSection
  
  Section "Monitor"
  Identifier "Monitor2"
  VendorName "Unknown"
  ModelName "Acer AL1916"
  HorizSync 31.0 - 83.0
  VertRefresh 56.0 - 75.0
  Option "DPMS"
  EndSection
  
  Section "Monitor"
  Identifier "Monitor3"
  VendorName "Unknown"
  ModelName "Acer AL1916"
  HorizSync 31.0 - 83.0
  VertRefresh 56.0 - 75.0
  Option "DPMS"
  EndSection
  
  Section "Device"
  Identifier "Device0"
  Driver "nvidia"
  VendorName "NVIDIA Corporation"
  BoardName "GeForce GT 520"
  BusID "PCI:1:0:0"
  Screen 0
  EndSection
  
  Section "Device"
  Identifier "Device1"
  Driver "nvidia"
  VendorName "NVIDIA Corporation"
  BoardName "GeForce GT 520"
  BusID "PCI:1:0:0"
  Screen 1
  EndSection
  
  Section "Device"
  Identifier "Device2"
  Driver "nvidia"
  VendorName "NVIDIA Corporation"
  BoardName "GeForce GT 520"
  BusID "PCI:6:0:0"
  Screen 0
  EndSection
  
  Section "Device"
  Identifier "Device3"
  Driver "nvidia"
  VendorName "NVIDIA Corporation"
  BoardName "GeForce GT 520"
  BusID "PCI:6:0:0"
  Screen 1
  EndSection
  
  Section "Screen"
  Identifier "Screen0"
  Device "Device0"
  Monitor "Monitor0"
  DefaultDepth 24
  Option "TwinView" "0"
  Option "TwinViewXineramaInfoOrder" "CRT-0"
  Option "metamodes" "CRT-0: 1280x1024_75 +0+0"
  SubSection "Display"
  Depth 24
  EndSubSection
  EndSection
  
  Section "Screen"
  Identifier "Screen1"
  Device "Device1"
  Monitor "Monitor1"
  DefaultDepth 24
  Option "TwinView" "0"
  Option "metamodes" "CRT-1: 1280x1024_75 +0+0"
  SubSection "Display"
  Depth 24
  EndSubSection
  EndSection
  
  Section "Screen"
  Identifier "Screen2"
  Device "Device2"
  Monitor "Monitor2"
  DefaultDepth 24
  Option "TwinView" "0"
  Option "metamodes" "CRT-0: 1280x1024_75 +0+0"
  SubSection "Display"
  Depth 24
  EndSubSection
  EndSection
  
  Section "Screen"
  Identifier "Screen3"
  Device "Device3"
  Monitor "Monitor3"
  DefaultDepth 24
  Option "TwinView" "0"
  Option "metamodes" "CRT-1: 1280x1024_75 +0+0"
  SubSection "Display"
  Depth 24
  EndSubSection
  EndSection
  
  At the moment, if I chose Unity3D, it will just display on 1 screen, if
  I choose Unity2D it will mirror 1 screen to all screens, so I have to
  resort to gnome-classic to get all 4 screens to work with the above
  xorg.conf.

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https://bugs.launchpad.net/bugs/995042

Title:
  Unity3D not working with 4 monitors

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