This is my xorg.conf # Xorg configuration created by system-config-display Section "ServerLayout" Identifier "single head configuration" Screen 0 "aticonfig-Screen[0]" 0 0 InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Synaptics" "CorePointer" EndSection Section "Files" EndSection Section "Module" Load "glx" Load "extmod" Load "dri" EndSection Section "InputDevice" Identifier "Keyboard0" Driver "kbd" Option "XkbModel" "pc105" Option "XkbLayout" "gb" EndSection Section "InputDevice" Identifier "Synaptics" Driver "synaptics" Option "Device" "/dev/input/mice" Option "Protocol" "auto-dev" Option "Emulate3Buttons" "yes" EndSection Section "Monitor" Identifier "aticonfig-Monitor[0]" Option "VendorName" "ATI Proprietary Driver" Option "ModelName" "Generic Autodetecting Monitor" Option "DPMS" "true" EndSection Section "Device" Identifier "aticonfig-Device[0]" Driver "fglrx" Option "AddARGBGLXVisuals" "True" Option "VideoOverlay" "on" EndSection Section "Screen" Identifier "aticonfig-Screen[0]" Device "aticonfig-Device[0]" Monitor "aticonfig-Monitor[0]" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection Section "DRI" Group 0 Mode 0666 EndSection Section "Extensions" Option "Composite" EndSection Alan J. Gagne wrote:
Post you /etc/X11/xorg.conf would help to resolve this. Adding these entries if they do not exists should help. Section "Module" Load "glx" Load "dri" EndSection Section "Extensions" Option "Composite" "Disable" EndSection This is a good site for ati info. http://www.phoronix.net/forums/forumdisplay.php?f=19 Copy of my xorg.conf. # Xorg configuration created by system-config-display Section "ServerLayout" Identifier "aticonfig-Layout[all]" Screen 0 "aticonfig-Screen[0]" 0 0 EndSection Section "Files" EndSection Section "Module" Load "glx" Load "dri" EndSection Section "Monitor" Identifier "aticonfig-Monitor[0]" Option "VendorName" "ATI Proprietary Driver" Option "ModelName" "Generic Autodetecting Monitor" Option "DPMS" "true" EndSection Section "Monitor" Identifier "aticonfig-Monitor[1]" Option "VendorName" "ATI Proprietary Driver" Option "ModelName" "Generic Autodetecting Monitor" Option "DPMS" "true" EndSection Section "Device" Identifier "aticonfig-Device[0]" Driver "fglrx" Option "DesktopSetup" "horizontal" Option "OverlayOnCRTC2" "1" BusID "PCI:1:0:0" EndSection Section "Device" Identifier "aticonfig-Device[1]" Driver "fglrx" BusID "PCI:1:0:1" Screen 1 EndSection Section "Screen" Identifier "aticonfig-Screen[0]" Device "aticonfig-Device[0]" Monitor "aticonfig-Monitor[0]" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection Section "Screen" Identifier "aticonfig-Screen[1]" Device "aticonfig-Device[1]" Monitor "aticonfig-Monitor[1]" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection Section "DRI" Group 0 Mode 0666 EndSection Section "Extensions" Option "Composite" "Disable" EndSection