My Laptop Toshiba dynabook TX/860LS

/etc/X11/xorg.conf

Section "Device"
    Identifier  "Card0"
    Driver      "radeon"
    VendorName  "ATI Technologies Inc"
    BoardName   "RC410 [Radeon Xpress 200M]"
    BusID       "PCI:1:5:0"
        Option      "AccelMethod" "EXA"
        Option      "XAANoOffscreenPixmaps" "true"
        Option      "AGPMode" "16"
        Option      "SubPixelOrder" "RGB"
        Option      "DynamicClocks" "on"
EndSection