Forgot to print my xorg.conf relevant part:
Section "Device" Identifier "ATI Technologies Inc RV370 5B64 [FireGL V3100 (PCIE)]" Driver "ati" Option "GARTSize" "64" BusID "PCI:1:0:0" EndSection
Forgot to print my xorg.conf relevant part:
Section "Device"
Identifier "ATI Technologies Inc RV370 5B64 [FireGL V3100 (PCIE)]"
Driver "ati"
Option "GARTSize" "64"
BusID "PCI:1:0:0"
EndSection