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I am running two monitors in Xinerama, left and right. I cannot convince the NVidia drivers to rotate the right screen, and XRandR will not run, stating "RandR extension missing".

I am running Xorg 7.7 under Ubuntu 12.10, with the NVidia proprietary drivers, version 304.43. (Though the version numbers don't seem to matter, because I get this problem with every version of all of the above.)

Here is my xorg.conf:

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    Screen      1  "Screen1" RightOf "Screen0"
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    Option         "Xinerama" "true"
EndSection

Section "Files"
EndSection

Section "InputDevice"
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/psaux"
    Option         "Emulate3Buttons" "yes"
    Option         "ZAxisMapping" "8 9"
EndSection

Section "InputDevice"
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Unknown"
    HorizSync       28.0 - 33.0
    VertRefresh     43.0 - 72.0
    Option         "DPMS"
EndSection

Section "Monitor"
  Identifier       "Monitor1"
  HorizSync        31.5 - 81.0
  VertRefresh      56.0 - 75.0
  Option           "DPMS"
  Option           "Rotate" "Left"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BusID          "PCI:1:0:0"
    Option         "RandRRotation" "true"
EndSection

Section "Device"
    Identifier     "Device1"
    Driver         "Intel"
    BusID          "PCI:0:2:0"
    Option         "RandRRotation" "true"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "Screen"
    Identifier     "Screen1"
    Device         "Device1"
    Monitor        "Monitor1"
    Option         "Rotate" "Left"
    DefaultDepth   24
    Subsection     "Display"
        Depth     24
    EndSubSection
EndSection
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