Kde4 and compositing

i've been messing with this for a few hours again tonight, i've messed with it before. but it was working a couple months ago, and then stopped working. so i've been trying to fix it anyway.
but basically, in KDE4, when i go to system settings=>desktop, on the general tab for desktop effects, the option to enable the desktop effects is greyed out, with a message above it that says
Compositing is not supported on your system.
Required X extension (XComposite and Xdamage) are not available.
i can't figure it out, i've been over the wiki, and over the nvidia man page, etc, i can't figure it out. here's my xorg.conf, if anyone has any ideas, i'm happy to hear them
Section "ServerLayout"
Identifier "Xorg Configured"
Screen 0 "Screen0" LeftOf "Screen1"
Screen 1 "Screen1" 1600 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "PS/2 Mouse" "CorePointer"
EndSection
Section "Files"
ModulePath "/usr/lib/xorg/modules"
FontPath "/usr/share/fonts/misc:unscaled"
FontPath "/usr/share/fonts/misc"
FontPath "/usr/share/fonts/75dpi:unscaled"
FontPath "/usr/share/fonts/75dpi"
FontPath "/usr/share/fonts/100dpi:unscaled"
FontPath "/usr/share/fonts/100dpi"
FontPath "/usr/share/fonts/PEX"
FontPath "/usr/share/fonts/cyrillic"
FontPath "/usr/share/fonts/Type1"
FontPath "/usr/share/fonts/ttf/western"
FontPath "/usr/share/fonts/ttf/decoratives"
FontPath "/usr/share/fonts/truetype"
FontPath "/usr/share/fonts/truetype/openoffice"
FontPath "/usr/share/fonts/truetype/ttf-bitstream-vera"
FontPath "/usr/share/fonts/latex-ttf-fonts"
FontPath "/usr/share/fonts/defoma/CID"
FontPath "/usr/share/fonts/defoma/TrueType"
EndSection
Section "Module"
Load "ddc" # ddc probing of monitor
Load "dbe"
Load "extmod"
Load "glx"
Load "bitmap" # bitmap-fonts
EndSection
Section "ServerFlags"
Option "AllowMouseOpenFail" "true"
Option "Xinerama" "1"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "keyboard"
Option "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
Option "XkbVariant" ""
Option "XkbOptions" "terminate:ctrl_alt_bksp"
EndSection
Section "InputDevice"
Identifier "Serial Mouse"
Driver "mouse"
Option "Protocol" "Microsoft"
Option "Device" "/dev/ttyS0"
Option "Emulate3Buttons" "true"
Option "Emulate3Timeout" "70"
Option "SendCoreEvents" "true"
EndSection
Section "InputDevice"
Identifier "PS/2 Mouse"
Driver "mouse"
Option "Protocol" "auto"
Option "ZAxisMapping" "4 5"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "true"
Option "Emulate3Timeout" "70"
Option "SendCoreEvents" "true"
EndSection
Section "InputDevice"
Identifier "USB Mouse"
Driver "mouse"
Option "Device" "/dev/input/mice"
Option "SendCoreEvents" "true"
Option "Protocol" "IMPS/2"
Option "ZAxisMapping" "4 5"
Option "Buttons" "5"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "CRT-0"
HorizSync 30.0 - 121.0
VertRefresh 48.0 - 160.0
ModeLine "1600x1200" 175.5 1600 1664 1856 2160 1200 1201 1204 1250 +hsync +vsync
Option "DPMS" "true"
EndSection
Section "Monitor"
Identifier "Monitor1"
VendorName "Unknown"
ModelName "SUN GDM-5410"
HorizSync 30.0 - 121.0
VertRefresh 48.0 - 160.0
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 8800 GT"
Screen 0
EndSection
Section "Device"
Identifier "Device1"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 8800 GT"
Screen 1
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "TwinView" "0"
Option "TwinViewXineramaInfoOrder" "CRT-0"
Option "metamodes" "CRT-0: 1600x1200_75 +0+0"
Option "Coolbits" "1"
Option "RenderAccel" "True"
Option "AddARGBGLXVisuals" "True"
SubSection "Display"
Depth 24
EndSubSection
EndSection
Section "Screen"
Identifier "Screen1"
Device "Device1"
Monitor "Monitor1"
DefaultDepth 24
Option "TwinViewXineramaInfoOrder" "CRT-0"
Option "TwinView" "0"
Option "metamodes" "CRT-1: 1600x1200 +0+0"
Option "Coolbits" "1"
Option "RenderAccel" "True"
Option "AddARGBGLXVisuals" "True"
SubSection "Display"
Depth 24
EndSubSection
EndSection
Section "Extensions"
Option "Composite" "Enable"
EndSection
Last edited by ssl6 (2009-10-10 01:22:56)

no, i just got the second monitor not long ago. i spent a few hours toying with my xorg.conf to get my desktop to extend properly......you do raise a good point though, compositing hasn't worked since then

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