>Покажите xorg.conf Собственно вот. Из Mandriva 2006
# File generated by XFdrake.
# **********************************************************************
# Refer to the XF86Config man page for details about the format of
# this file.
# **********************************************************************
Section "Files"
    # Multiple FontPath entries are allowed (they are concatenated together)
    # By default, Mandrake 6.0 and later now use a font server independent of
    # the X server to render fonts.
    FontPath "unix/:-1"
EndSection
Section "ServerFlags"
    #DontZap # disable <Crtl><Alt><BS> (server abort)
    AllowMouseOpenFail # allows the server to start up even if the mouse does not work
    #DontZoom # disable <Crtl><Alt><KP_+>/<KP_-> (resolution switching)
EndSection
Section "Module"
    Load "dbe" # Double-Buffering Extension
    Load "v4l" # Video for Linux
    Load "extmod"
    Load "type1"
    Load "freetype"
    Load "synaptics"
    Load "glx" # 3D layer
    Load "dri" # direct rendering
EndSection
Section "InputDevice"
    Identifier "Keyboard1"
    Driver "keyboard"
    Option "XkbModel" "pc105"
    Option "XkbLayout" "us,ru(winkeys)"
    Option "XkbOptions" "grp:alt_shift_toggle,grp_led:scroll,compose:rwin"
EndSection
Section "InputDevice"
    Identifier "Mouse1"
    Driver "mouse"
    Option "Protocol" "ExplorerPS/2"
    Option "Device" "/dev/mouse"
    Option "ZAxisMapping" "6 7"
EndSection
Section "InputDevice"
    Identifier "SynapticsMouse1"
    Driver "synaptics"
    Option "Protocol" "auto-dev"
    Option "Device" "/dev/input/mice"
    Option "MinSpeed" "0.09"
    Option "MaxSpeed" "0.18"
    Option "BottomEdge" "4200"
    Option "SHMConfig" "on"
    Option "FingerLow" "25"
    Option "LeftEdge" "1700"
    Option "MaxTapMove" "220"
    Option "MaxTapTime" "180"
    Option "FingerHigh" "30"
    Option "VertScrollDelta" "100"
    Option "TopEdge" "1700"
    Option "AccelFactor" "0.0015"
    Option "RightEdge" "5300"
EndSection
Section "Monitor"
    Identifier "monitor1"
    VendorName "Generic"
    ModelName "Flat Panel 1280x800"
    HorizSync 31.5-90
    VertRefresh 60
    
    # 1280x800 @ 60.00 Hz (GTF) hsync: 49.68 kHz; pclk: 83.46 MHz
    Modeline "1280x800_60.00"  83.46  1280 1344 1480 1680  800 801 804 828  -HSync +Vsync
    
    # TV fullscreen mode or DVD fullscreen output.
    # 768x576 @ 79 Hz, 50 kHz hsync
    ModeLine "768x576"     50.00  768  832  846 1000   576  590  595  630
    
    # 768x576 @ 100 Hz, 61.6 kHz hsync
    ModeLine "768x576"     63.07  768  800  960 1024   576  578  590  616
    
    # modeline generated by gtf(1) [handled by XFdrake]
    ModeLine "1280x800_120"  181.21  1280 1376 1520 1760  800 801 804 858  -HSync +Vsync
    
    # modeline generated by gtf(1) [handled by XFdrake]
    ModeLine "1280x800_100"  147.89  1280 1376 1512 1744  800 801 804 848  -HSync +Vsync
    
    # modeline generated by gtf(1) [handled by XFdrake]
    ModeLine "1280x800_85"  123.38  1280 1368 1504 1728  800 801 804 840  -HSync +Vsync
    
    # modeline generated by gtf(1) [handled by XFdrake]
    ModeLine "1280x800_75"  107.21  1280 1360 1496 1712  800 801 804 835  -HSync +Vsync
    
    # modeline generated by gtf(1) [handled by XFdrake]
    ModeLine "1280x800_60"  83.46  1280 1344 1480 1680  800 801 804 828  -HSync +Vsync
    
    # modeline generated by gtf(1) [handled by XFdrake]
    ModeLine "1280x800_50"  68.56  1280 1336 1472 1664  800 801 804 824  -HSync +Vsync
EndSection
Section "Device"
    Identifier "device1"
    VendorName "Intel Corp."
    BoardName "Intel 915"
    Driver "i810"
    Option "DPMS"
EndSection
Section "Screen"
    Identifier "screen1"
    Device "device1"
    Monitor "monitor1"
    DefaultColorDepth 24
    
    Subsection "Display"
        Depth 8
        Virtual 1280 800
    EndSubsection
    
    Subsection "Display"
        Depth 15
        Virtual 1280 800
    EndSubsection
    
    Subsection "Display"
        Depth 16
        Virtual 1280 800
    EndSubsection
    
    Subsection "Display"
        Depth 24
        Virtual 1280 800
    EndSubsection
EndSection
Section "ServerLayout"
    Identifier "layout1"
    InputDevice "Keyboard1" "CoreKeyboard"
    InputDevice "Mouse1" "CorePointer"
    InputDevice "SynapticsMouse1" "AlwaysCore"
    Screen "screen1"
EndSection