Additional comment: Here's the relevant part of my xorg.conf
Section "Monitor" Identifier "Monitor0" VendorName "Monitor Vendor" ModelName "Monitor Model" EndSection
Section "Device" Identifier "Card0" Driver "radeon" VendorName "ATI Technologies Inc" BoardName "Radeon Mobility M7 LW [Radeon Mobility 7500]" BusID "PCI:1:0:0" Option "AccelMethod" "EXA" Option "DRI" "true" EndSection
Section "Screen" Identifier "Screen0" Monitor "Monitor0" Device "Card0"
Defaultdepth 16 Virtual 1024 768 EndSection
Additional comment: Here's the relevant part of my xorg.conf
Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection
Section "Device"
Identifier "Card0"
Driver "radeon"
VendorName "ATI Technologies Inc"
BoardName "Radeon Mobility M7 LW [Radeon Mobility 7500]"
BusID "PCI:1:0:0"
Option "AccelMethod" "EXA"
Option "DRI" "true"
EndSection
Section "Screen"
Identifier "Screen0"
Monitor "Monitor0"
Device "Card0"
Virtual 1024 768
EndSection