what I've changed

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

Section "Device"
        Identifier  "aticonfig-Device[0]"
        Driver      "fglrx"
        Option      "VideoOverlay" "on"
        Option      "OpenGLOverlay" "off"








# tail -f /var/log/Xorg.0.log
Data incomplete in file /etc/X11/xorg.conf
        Undefined Device "Generic Video Card" referenced by Screen "Default Screen".
(EE) Problem parsing the config file
(EE) Error parsing the config file

Fatal server error:
no screens found
(WW) xf86CloseConsole: KDSETMODE failed: Bad file descriptor
(WW) xf86CloseConsole: VT_GETMODE failed: Bad file descriptor
(WW) xf86OpenConsole: VT_GETSTATE failed: Bad file descriptor