[Gulli] Problema Video

[Hornet2e]

Allora:
la distro è una debian unstable con x.org 6.9 e una scheda radeon 9100 
(r200) installata sul mio pc fisso.
Ecco il mio file xorg.conf:


Section "Files"
    FontPath    "unix/:7100"            # local font server
    # if the local font server has problems, we can fall back on these
    FontPath    "/usr/lib/X11/fonts/misc"
    FontPath    "/usr/lib/X11/fonts/cyrillic"
    FontPath    "/usr/lib/X11/fonts/100dpi/:unscaled"
    FontPath    "/usr/lib/X11/fonts/75dpi/:unscaled"
    FontPath    "/usr/lib/X11/fonts/Type1"
    FontPath    "/usr/lib/X11/fonts/CID"
    FontPath    "/usr/lib/X11/fonts/100dpi"
    FontPath    "/usr/lib/X11/fonts/75dpi"
EndSection

Section "Module"
    Load    "bitmap"
    Load    "dbe"
    Load    "ddc"
    Load    "dri"
    Load    "evdev"
    Load    "extmod"
    Load    "freetype"
    Load    "glx"
    Load    "int10"
    Load    "record"
    Load    "type1"
#    Load    "v4l"
    Load    "vbe"
EndSection

Section "InputDevice"
    Identifier    "Generic Keyboard"
    Driver        "keyboard"
    Option        "CoreKeyboard"
    Option        "XkbRules"    "xorg"
    Option        "XkbModel"    "pc105"
    Option        "XkbLayout"    "it"
EndSection

Section "InputDevice"
    Identifier    "Configured Mouse"
    Driver        "mouse"
    Option        "CorePointer"
    Option        "Device"        "/dev/input/mice"
    Option        "Protocol"        "ImPS/2"
    Option        "Emulate3Buttons"    "false"
    Option        "ZAxisMapping"        "4 5"
EndSection

Section "Device"
    Identifier    "ATI Technologies, Inc. Radeon R200 QM [Radeon 9100]"
    Driver        "ati"
    Option            "(null)"
    Option            "VideoOverlay" "on"
    Option            "OpenGLOverlay" "off"
    BusID        "PCI:1:0:0"
EndSection

# sezione VideoAdaptor Assente

Section "Monitor"
    Identifier    "Samsung SyncMaster 171s"
    Option        "DPMS"
    HorizSync    30-65
    VertRefresh    50-75
EndSection

Section "Screen"
    Identifier    "Default Screen"
    Device        "ATI Technologies, Inc. Radeon R200 QM [Radeon 9100]"
    Monitor        "Samsung SyncMaster 171s"
    DefaultDepth    24
    SubSection "Display"
        Depth        1
        Modes        "1280x1024" "1024x768" "800x600" "640x480"
    EndSubSection
    SubSection "Display"
        Depth        4
        Modes        "1280x1024" "1024x768" "800x600" "640x480"
    EndSubSection
    SubSection "Display"
        Depth        8
        Modes        "1280x1024" "1024x768" "800x600" "640x480"
    EndSubSection
    SubSection "Display"
        Depth        15
        Modes        "1280x1024" "1024x768" "800x600" "640x480"
    EndSubSection
    SubSection "Display"
        Depth        16
        Modes        "1280x1024" "1024x768" "800x600" "640x480"
    EndSubSection
    SubSection "Display"
        Depth        24
        Modes        "1280x1024" "1024x768" "800x600" "640x480"
    EndSubSection
EndSection

Section "ServerLayout"
    Identifier    "Default Layout"
    Screen        "Default Screen"
    InputDevice    "Generic Keyboard"
    InputDevice    "Configured Mouse"
EndSection

Section "DRI"
    Mode    0666
EndSection

Grazie stefano!