Can not enable compositing

G

georgen

I've not been able to enable the compositing that Compiz requires. It gives the error message:

Code: 
compiz (core) - Fatal: No composite extension

I can't see why as I've enabled the Composite extension in my xorg.conf file.

Here is /etc/X11/xorg.conf file:

Code: 
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 256.53  (root@etalon)  Tue Dec  7 20:34:51 GMT 2010

# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 256.53  (root@etalon)  Tue Dec  7 18:33:44 GMT 2010

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" "1"
    Option         "Composite" "On"
EndSection

Section "Module"
    Load           "extmod"
    Load           "glx"
EndSection

Section "Files"
    FontPath        "/usr/local/lib/X11/fonts/misc/:unscaled"
    FontPath        "/usr/local/lib/X11/fonts/100dpi/:unscaled"
    FontPath        "/usr/local/lib/X11/fonts/75dpi/:unscaled"
    FontPath        "/usr/local/lib/X11/fonts/misc/"
    FontPath        "/usr/local/lib/X11/fonts/Type1/"
    FontPath        "/usr/local/lib/X11/fonts/100dpi/"
    FontPath        "/usr/local/lib/X11/fonts/75dpi/"
    FontPath        "/usr/local/lib/X11/fonts/cyrillic/"
    FontPath        "/usr/local/lib/X11/fonts/TTF/"
EndSection

Section "InputDevice"

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

Section "InputDevice"

    # generated from default
    Identifier     "Keyboard0"
    Driver         "keyboard"
EndSection

Section "Monitor"
    Identifier     "Monitor1"
    VendorName     "Unknown"
    ModelName      "FUS D22W-1"
    HorizSync       30.0 - 83.0
    VertRefresh     56.0 - 75.0
    Option         "DPMS"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "CRT-1"
    HorizSync       30.0 - 95.0
    VertRefresh     50.0 - 150.0
    Gamma           1
    ModeLine       "640x480@60" 25.2 640 656 752 800 480 490 492 525 -hsync -vsync
    ModeLine       "640x480@72" 31.5 640 664 704 832 480 489 491 520 -hsync -vsync
    ModeLine       "640x480@75" 31.5 640 656 720 840 480 481 484 500 -hsync -vsync
    ModeLine       "640x480@85" 36.0 640 696 752 832 480 481 484 509 -hsync -vsync
    ModeLine       "800x600@56" 36.0 800 824 896 1024 600 601 603 625 +hsync +vsync
    ModeLine       "800x600@72" 50.0 800 856 976 1040 600 637 643 666 +hsync +vsync
    ModeLine       "800x600@75" 49.5 800 816 896 1056 600 601 604 625 +hsync +vsync
    ModeLine       "800x600@85" 56.3 800 832 896 1048 600 601 604 631 +hsync +vsync
    ModeLine       "800x600@60" 40.0 800 840 968 1056 600 601 605 628 +hsync +vsync
    ModeLine       "832x624@75" 57.3 832 864 928 1152 624 625 628 667 -hsync -vsync
    ModeLine       "1024x768@85" 94.5 1024 1072 1168 1376 768 769 772 808 +hsync +vsync
    ModeLine       "1024x768@75" 78.8 1024 1040 1136 1312 768 769 772 800 +hsync +vsync
    ModeLine       "1024x768@70" 75.0 1024 1048 1184 1328 768 771 777 806 -hsync -vsync
    ModeLine       "1024x768@60" 65.0 1024 1048 1184 1344 768 771 777 806 -hsync -vsync
    ModeLine       "1024x768@43" 44.9 1024 1032 1208 1264 768 768 776 817 +hsync +vsync interlace
    ModeLine       "1152x864@75" 108.0 1152 1216 1344 1600 864 865 868 900 +hsync +vsync
    ModeLine       "1280x1024@75" 135.0 1280 1296 1440 1688 1024 1025 1028 1066 +hsync +vsync
    ModeLine       "1280x960@60" 102.1 1280 1360 1496 1712 960 961 964 994 -hsync +vsync
    ModeLine       "1280x960@85" 148.5 1280 1344 1504 1728 960 961 964 1011 +hsync +vsync
    ModeLine       "1280x1024@85" 157.5 1280 1344 1504 1728 1024 1025 1028 1072 +hsync +vsync
    ModeLine       "1280x1024@60" 108.0 1280 1328 1440 1688 1024 1025 1028 1066 +hsync +vsync
    ModeLine       "1280x960@75" 129.9 1280 1368 1504 1728 960 961 964 1002 -hsync +vsync
    ModeLine       "1400x1050@60" 122.6 1400 1488 1640 1880 1050 1051 1054 1087 -hsync +vsync
    ModeLine       "1400x1050@75" 155.8 1400 1496 1648 1896 1050 1051 1054 1096 -hsync +vsync
    ModeLine       "1600x1200@65" 175.5 1600 1664 1856 2160 1200 1201 1204 1250 +hsync +vsync
    ModeLine       "1600x1200@60" 162.0 1600 1664 1856 2160 1200 1201 1204 1250 +hsync +vsync
    ModeLine       "1600x1200@75" 202.5 1600 1664 1856 2160 1200 1201 1204 1250 +hsync +vsync
    ModeLine       "1600x1200@70" 189.0 1600 1664 1856 2160 1200 1201 1204 1250 +hsync +vsync
    ModeLine       "1792x1344@60" 204.8 1792 1920 2120 2448 1344 1345 1348 1394 -hsync +vsync
    ModeLine       "1856x1392@60" 218.3 1856 1952 2176 2528 1392 1393 1396 1439 -hsync +vsync
    ModeLine       "1920x1440@60" 234.0 1920 2048 2256 2600 1440 1441 1444 1500 -hsync +vsync
    ModeLine       "2048x1536@60" 266.9 2048 2200 2424 2800 1536 1537 1540 1589 -hsync +vsync
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce 8600 GT"
    BusID          "PCI:7:0:0"
    Screen          0
    Option         "Composite" "On"
EndSection

Section "Device"
    Identifier     "Device1"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce 8600 GT"
    BusID          "PCI:7:0:0"
    Screen          1
    Option         "Composite" "On"
EndSection

Section "Screen"

# Removed Option "TwinView" "1"
    Identifier     "Screen1"
    Device         "Device1"
    Monitor        "Monitor1"
    DefaultDepth    24
    Option         "TwinView" "0"
    Option         "metamodes" "DFP: nvidia-auto-select +0+0"
    Option         "AddARGBGLXVisuals" "True"
    Option         "Composite" "On"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "Screen"

# Removed Option "metamodes" "CRT: nvidia-auto-select +0+0"
# Removed Option "metamodes" "CRT: 1600x1200@70 +0+0"
# Removed Option "TwinView" "1"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "TwinView" "0"
    Option         "metamodes" "CRT: 1600x1200_70 +0+0"
    Option         "AddARGBGLXVisuals" "True"
    Option         "Composite" "On"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "Extensions"
    Option         "Composite" "Enable"
EndSection

Thanks in advance for your help.
 
You can not use xinerama and compositing at the same time. Simply enabling xinerama will automatically, and always, disable composite. This is a limitation in Xorg, and is true for all drivers.

With nvidia, if you have two monitors attached to a single video card, you should use twinview if you want compositing.

Adam
 
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