root@bt:~/Desktop# glxinfo
name of display: :0.0
X Error of failed request:  BadRequest (invalid request code or no such operation)
  Major opcode of failed request:  136 (GLX)
  Minor opcode of failed request:  19 (X_GLXQueryServerString)
  Serial number of failed request:  18
  Current serial number in output stream:  18
root@bt:~/Desktop#

Section "ServerLayout"
   Identifier     "aticonfig Layout"
   Screen      0  "aticonfig-Screen[0]-0" 0 0
EndSection

Section "Module"
EndSection

Section "Monitor"
   Identifier   "aticonfig-Monitor[0]-0"
   Option       "VendorName" "ATI Proprietary Driver"
   Option       "ModelName" "Generic Autodetecting Monitor"
   Option       "DPMS" "true"
EndSection

Section "Device"
   Identifier  "aticonfig-Device[0]-0"
   Driver      "fglrx"
   BusID       "PCI:1:0:0"
EndSection

Section "Screen"
   Identifier "aticonfig-Screen[0]-0"
   Device     "aticonfig-Device[0]-0"
   Monitor    "aticonfig-Monitor[0]-0"
   DefaultDepth     24
   SubSection "Display"
      Viewport   0 0
      Depth     24
   EndSubSection
EndSection

root@bt:~/Desktop# compiz
compiz (core) - Fatal: glXCreateContext failed
compiz (core) - Error: Failed to manage screen: 0
compiz (core) - Fatal: No manageable screens found on display :0.0

Launching fallback window manager