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Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
EndSection

Section "Files"
EndSection

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

Section "ServerFlags"
    Option         "Xinerama" "0"
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"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Gateway FPD1960"
    HorizSync       30.0 - 80.0
    VertRefresh     60.0 - 75.0
    Option         "DPMS"
    Option   "AddARGBGLXVisuals"   "true"

EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce 8600 GTS"
    Option         "XAANoOffscreenPixmaps"   "true"
    Option   "AllowGLXWithComposite"   "true"
    Option   "TripleBuffer"   "true"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "TwinView" "0"
    Option         "metamodes" "1280x1024_75 +0+0; nvidia-auto-select +0+0; 1280x1024 +0+0"
Option         "TripleBuffer" "true" 
Option         "no GLXFBConfig for depth 32" 
Option         "AddARGBVisuals" "True" 
Option         "AddARGBGLXVisuals" "True" 
Option         "DisableGLXRootClipping" "true"    
SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "Extensions"
        Option "Composite" "enable"
EndSection

Marcin-Debian:/home/marcin# glxinfo | grep direct
direct rendering: Yes
    GL_EXT_depth_bounds_test, GL_EXT_direct_state_access,

Marcin-Debian:/home/marcin# compiz -replace
Checking for Xgl: not present. 
Detected PCI ID for VGA: 02:00.0 0300: 10de:0400 (rev a1) (prog-if 00 [VGA controller])
Checking for texture_from_pixmap: present. 
Checking for non power of two support: present. 
Checking for Composite extension: present. 
Checking screen 1Comparing resolution (1280x1024) to maximum 3D texture size (8192): Passed.
Checking for Software Rasterizer: Not present. 
Checking for nVidia: present. 
Checking for FBConfig: present. 
Checking for Xgl: not present. 
/usr/bin/compiz.real (core) - Warn: Unknown option '-replace'

/usr/bin/compiz.real (core) - Warn: SmcOpenConnection failed: Authentication Rejected, reason : None of the authentication protocols specified are supported and host-based authentication failed
Backend     : ini
Integration : true
Profile     : default
Adding plugins
Initializing core options...done