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HeavyTortoise 11-24-2011 09:47 PM
Ubuntu 11.10 desktop fails to load with Xinerama/Nvidia
 
I hope this is the right forum for this question:

I have a fresh install of Ubuntu 11.10 on a 64 bit AMD machine with an Nvidia 460 graphics card. I'd like to run dual monitors using Xinerama. The initial install went without a hitch but now I can't enable Xinerama through Nvidia X server settings without losing my desktop. After enabling Xinerama the login screen loads and accepts my password and I get my wallpaper displayed on both monitors and a responsive mouse cursor across all displayable real estate, but that's it. No launcher appears and keyboard inputs are ignored. I've included my current xorg.conf, with Xinerama set to "0" so I can run my desktop. I hope someone here can provide me with some insight.

Code:
# 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"

# Removed Option "Xinerama" "0"
    Identifier    "Layout0"
    Screen      0  "Screen0" 0 0
    Screen      1  "Screen1" RightOf "Screen0"
    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    "Monitor0"
    VendorName    "Unknown"
    ModelName      "LG Electronics L226WTQ"
    HorizSync      28.0 - 83.0
    VertRefresh    56.0 - 75.0
    Option        "DPMS"
EndSection

Section "Monitor"

    # HorizSync source: edid, VertRefresh source: edid
    Identifier    "Monitor1"
    VendorName    "Unknown"
    ModelName      "Acer P191W"
    HorizSync      30.0 - 82.0
    VertRefresh    50.0 - 75.0
    Option        "DPMS"
EndSection

Section "Device"
    Identifier    "Device0"
    Driver        "nvidia"
    VendorName    "NVIDIA Corporation"
    BoardName      "GeForce GTX 460"
    BusID          "PCI:5:0:0"
    Screen          0
EndSection

Section "Device"
    Identifier    "Device1"
    Driver        "nvidia"
    VendorName    "NVIDIA Corporation"
    BoardName      "GeForce GTX 460"
    BusID          "PCI:5:0:0"
    Screen          1
EndSection

Section "Screen"
    Identifier    "Screen0"
    Device        "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option        "TwinView" "0"
    Option        "metamodes" "DFP-0: nvidia-auto-select +0+0"
    SubSection    "Display"
        Depth      24
    EndSubSection
EndSection

Section "Screen"
    Identifier    "Screen1"
    Device        "Device1"
    Monitor        "Monitor1"
    DefaultDepth    24
    Option        "TwinView" "0"
    Option        "metamodes" "DFP-3: nvidia-auto-select +0+0"
    SubSection    "Display"
        Depth      24
    EndSubSection
EndSection

jhwilliams 11-24-2011 10:23 PM
Try making a new xorg.conf with the nvidia-xconfig utility. Here is my xorg.conf, generated with that utility, that is working for two monitors with Xinerama.

Code:
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 280.13  (buildmeister@swio-display-x86-rhel47-03.nvidia.com)  Wed Jul 27 17:15:58 PDT 2011

# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 260.19.06  (buildd@yellow)  Mon Oct  4 15:59:51 UTC 2010
# commented out by update-manager, HAL is now used and auto-detects devices
# Keyboard settings are now read from /etc/default/console-setup
#Section "InputDevice"
#
#    # generated from default
#    Identifier    "Mouse0"
#    Driver        "mouse"
#    Option        "Protocol" "auto"
#    Option        "Device" "/dev/psaux"
#    Option        "Emulate3Buttons" "no"
#    Option        "ZAxisMapping" "4 5"
#EndSection
# commented out by update-manager, HAL is now used and auto-detects devices
# Keyboard settings are now read from /etc/default/console-setup
#Section "InputDevice"
#
#    # generated from default
#    Identifier    "Keyboard0"
#    Driver        "kbd"
#EndSection

Section "ServerLayout"

# commented out by update-manager, HAL is now used and auto-detects devices
# Keyboard settings are now read from /etc/default/console-setup
#    InputDevice    "Keyboard0" "CoreKeyboard"
# commented out by update-manager, HAL is now used and auto-detects devices
# Keyboard settings are now read from /etc/default/console-setup
#    InputDevice    "Mouse0" "CorePointer"
    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    "Keyboard0"
    Driver        "keyboard"
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 "Monitor"

    # HorizSync source: edid, VertRefresh source: edid
    Identifier    "Monitor0"
    VendorName    "Unknown"
    ModelName      "DELL 2007FP"
    HorizSync      30.0 - 83.0
    VertRefresh    56.0 - 76.0
    Option        "DPMS"
EndSection

Section "Device"
    Identifier    "Device0"
    Driver        "nvidia"
    VendorName    "NVIDIA Corporation"
    BoardName      "GeForce 210"
EndSection

Section "Screen"

# Removed Option "TwinViewXineramaInfoOrder" "DFP-0"
# Removed Option "TwinViewXineramaInfoOrder" "DFP-1"
# Removed Option "metamodes" "DFP-0: nvidia-auto-select +1600+0, DFP-1: nvidia-auto-select +0+0"
    Identifier    "Screen0"
    Device        "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option        "TwinView" "1"
    Option        "TwinViewXineramaInfoOrder" "DFP-0"
    Option        "metamodes" "DFP-0: nvidia-auto-select +0+0, DFP-1: nvidia-auto-select +1600+0"
    SubSection    "Display"
        Depth      24
    EndSubSection
EndSection

HeavyTortoise 11-25-2011 12:03 AM
Running nvidia-xconfig helped a little, but I still can't use the second monitor. THe cursor "X"s out when I move over it, and now my keyboard input lag has increased to an intolerable degree. Here's the xorg.conf that I have now:

Code:
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 280.13  (buildmeister@swio-display-x86-rhel47-03.nvidia.com)  Wed Jul 27 17:15:58 PDT 2011

# 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"

# Removed Option "Xinerama" "0"
# Removed Option "Xinerama" "0"
    Identifier    "Layout0"
    Screen      0  "Screen0" 0 0
    Screen      1  "Screen1" RightOf "Screen0"
    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    "Monitor0"
    VendorName    "Unknown"
    ModelName      "LG Electronics L226WTQ"
    HorizSync      28.0 - 83.0
    VertRefresh    56.0 - 75.0
    Option        "DPMS"
EndSection

Section "Monitor"

    # HorizSync source: edid, VertRefresh source: edid
    Identifier    "Monitor1"
    VendorName    "Unknown"
    ModelName      "Acer P191W"
    HorizSync      30.0 - 82.0
    VertRefresh    50.0 - 75.0
    Option        "DPMS"
EndSection

Section "Device"
    Identifier    "Device0"
    Driver        "nvidia"
    VendorName    "NVIDIA Corporation"
    BoardName      "GeForce GTX 460"
    BusID          "PCI:5:0:0"
    Screen          0
EndSection

Section "Device"
    Identifier    "Device1"
    Driver        "nvidia"
    VendorName    "NVIDIA Corporation"
    BoardName      "GeForce GTX 460"
    BusID          "PCI:5:0:0"
    Screen          1
EndSection

Section "Screen"
    Identifier    "Screen0"
    Device        "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option        "TwinView" "0"
    Option        "metamodes" "DFP-0: nvidia-auto-select +0+0"
    SubSection    "Display"
        Depth      24
    EndSubSection
EndSection

Section "Screen"
    Identifier    "Screen1"
    Device        "Device1"
    Monitor        "Monitor1"
    DefaultDepth    24
    Option        "TwinView" "0"
    Option        "metamodes" "DFP-3: nvidia-auto-select +0+0"
    SubSection    "Display"
        Depth      24
    EndSubSection
EndSection


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