[3D Desktop 2]

問題が発生していたものですがTWINVIEWの機能を使えば問題なく動きました
以前はスクリーン間にウィンドウを通すとカクカクしていたのもなくなったし

・環境
ビデオカード：Quadro4 980 XGL
モニタ１：MITSUBISHI RDT1712S
モニタ２：HYUNDAI X93W

# vi /etc/X11/xorg.conf
Section "ServerLayout"
    Identifier "Layout0"
    Screen 0 "Screen0"
    Screen 1 "Screen1"
    InputDevice "Keyboard0" "CoreKeyboard"
    InputDevice "Mouse0" "CorePointer"
    Option "Xinerama" "off"
EndSection

Section "Files"
    FontPath "unix/:7100"
EndSection

Section "Module"
    Load "dbe"
    Load "extmod"
    Load "type1"
    Load "freetype"
    Load "glx"
EndSection

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

Section "InputDevice"
    # generated from data in "/etc/sysconfig/keyboard"
    Identifier "Keyboard0"
    Driver "kbd"
    Option "XkbLayout" "jp"
    Option "XkbModel" "jp106"
EndSection

Section "Monitor"
    Identifier "Monitor0"
    VendorName "Unknown"
    ModelName "Unknown"
    HorizSync 31.5 - 81.0
    VertRefresh 50.0 - 75.0
    Option "DPMS"
EndSection

Section "Monitor"
    Identifier "Monitor1"
    VendorName "Unknown"
    ModelName "Unknown"
    HorizSync 31.5 - 56.0
    VertRefresh 56.0 - 65.0
    Option "DPMS"
EndSection

Section "Device"
    Identifier "Device0"
    Driver "nvidia"
    VendorName "NVIDIA Corporation"
    Option "TwinView"
    Option "MetaModes" "1280x1024, 1440x900"
    Option "TwinViewOrientation" "LeftOf"
    Option "ConnectedMonitor" "DFP-0,DFP-1"
    Option "SecondMonitorHorizSync" "UseEdidFreqs"
    Option "SecondMonitorVertRefresh" "UseEdidFreqs"
EndSection

Section "Screen"
    Identifier "Screen0"
    Device "Device0"
    Monitor "Monitor0"
    DefaultDepth 24
    Option "DisableGLXRootClipping" "True"
    Option "RenderAccel" "True"
    Option "AddARGBGLXVisuals" "True"
    SubSection "Display"
        Depth 24
        Modes "1280x1024" "1024x768" "800x600" "640x480"
    EndSubSection
EndSection

Section "Screen"
    Identifier "Screen1"
    Device "Device0"
    Monitor "Monitor1"
    DefaultDepth 24
    Option "DisableGLXRootClipping" "True"
    Option "RenderAccel" "True"
    Option "AddARGBGLXVisuals" "True"
    SubSection "Display"
        Depth 24
        Modes "1440x900"
    EndSubSection
EndSection