Just got a new computer loaded with NVidia GForce N430, and installed a fresh new Ubuntu 11.10 amd64.

I also enabled nvidia drivers using "additional drivers" apt, and all is working fine in "normal" mode, however, I want to rotate my screens, and failed getting through.

IIRC, in previous installations, there used to be an entry for rotation within nvidia-settings UI, but not in this version.

I am using two screens, and willing to use them rotated 90 degrees clockwise (portrait vs. landscape).

I am dumping my X11/xorg.cong file and will appreciate if one can tell where to add the Option "RandRRotation" "True" line.

By the way,

$ xrandr -o right

prints out

X Error of failed request:  BadMatch (invalid parameter attributes)

  Major opcode of failed request:  153 (RANDR)

  Minor opcode of failed request:  2 (RRSetScreenConfig)

  Serial number of failed request:  14

  Current serial number in output stream:  14

Content of /etc/X11/xorg.conf

$ cat /etc/X11/xorg.conf



# nvidia-settings: X configuration file generated by nvidia-settings

# nvidia-settings:  version 280.13  (buildd@allspice)  Thu Aug 11 20:54:45 UTC 2011





Section "ServerLayout"

    Identifier     "Layout0"

    Screen      0  "Screen0" 0 0

    InputDevice    "Keyboard0" "CoreKeyboard"

    InputDevice    "Mouse0" "CorePointer"

    Option         "Xinerama" "0"

EndSection



Section "Files"

EndSection



Section "InputDevice"



    # generated from default

    Identifier     "Mouse0"

    Driver         "mouse"

    Option         "Protocol" "auto"

    Option         "Device" "/dev/psaux"

    Option         "Emulate3Buttons" "no"

    Option         "ZAxisMapping" "4 5"

EndSection



Section "InputDevice"



    # generated from default

    Identifier     "Keyboard0"

    Driver         "kbd"

EndSection



Section "Monitor"



    # HorizSync source: edid, VertRefresh source: edid

    Identifier     "Monitor1"

    VendorName     "Unknown"

    ModelName      "Philips 225P"

    HorizSync       30.0 - 83.0

    VertRefresh     56.0 - 76.0

    Option         "DPMS"

EndSection



Section "Monitor"



    # HorizSync source: edid, VertRefresh source: edid

    Identifier     "Monitor0"

    VendorName     "Unknown"

    ModelName      "Philips 225P"

    HorizSync       30.0 - 83.0

    VertRefresh     56.0 - 76.0

    Option         "DPMS"

EndSection



Section "Device"

    Identifier     "Device1"

    Driver         "nvidia"

    VendorName     "NVIDIA Corporation"

    BoardName      "GeForce GT 430"

    BusID          "PCI:4:0:0"

    Screen          1

EndSection



Section "Device"

    Identifier     "Device0"

    Driver         "nvidia"

    VendorName     "NVIDIA Corporation"

    BoardName      "GeForce GT 430"

EndSection



Section "Screen"

    Identifier     "Screen1"

    Device         "Device1"

    Monitor        "Monitor1"

    DefaultDepth    24

    Option         "TwinView" "0"

    Option         "metamodes" "DFP-1: nvidia-auto-select +0+0"

    SubSection     "Display"

        Depth       24

    EndSubSection

EndSection



Section "Screen"



# Removed Option "TwinView" "0"

# Removed Option "metamodes" "DFP-0: nvidia-auto-select +0+0"

    Identifier     "Screen0"

    Device         "Device0"

    Monitor        "Monitor0"

    DefaultDepth    24

    Option         "TwinView" "1"

    Option         "metamodes" "DFP-0: nvidia-auto-select +1680+0, DFP-1: nvidia-auto-select +0+0"

    SubSection     "Display"

        Depth       24

    EndSubSection

EndSection