wide screen laptop problem

[G S]

> Section "Device"
> Identifier  "Videocard0"
> Driver      "vesa"
> VendorName  "Videocard vendor"
> BoardName   "VESA driver (generic)"
> EndSection
> 
> Section "Screen"
> Identifier "Screen0"
> Device     "Videocard0"
> Monitor    "Monitor0"
> DefaultDepth     24
> SubSection "Display"
> Viewport   0 0
> Depth     16
> Modes    "1280x800" 800x600" "640x480"
> EndSubSection
> SubSection "Display"
> Viewport   0 0
> Depth     24
> Modes    "1280x800"
> EndSubSection
> EndSection

It seems you have bad adapter configured (VESA) instead of real
thing... so your defaul driver may not know about the mode you are
using. Do you have Intel integrated graphics? If so try the following:

Section "Monitor"
        Identifier   "Monitor0"
        VendorName   "Monitor Vendor"
        ModelName    "LCD Panel 1280x800"
        HorizSync    31.5 - 90.0
        VertRefresh  60.0 - 60.0
        ModeLine     "1280x800_60.00" 83.5 1280 1344 1480 1680 800 801
804 828 -hsync +vsync
        Option       "DPMS"
EndSection

Section "Device"
        Identifier  "Videocard0"
        Driver      "i810"
        VendorName  "Videocard vendor"
        BoardName   "Intel 855"
EndSection

Section "Screen"
        Identifier "Screen0"
        Device     "Videocard0"
        Monitor    "Monitor0"
        DefaultDepth     24
        SubSection "Display"
                Viewport   0 0
                Depth     24
                Modes    "1280x800" "1024x768" "800x600" "640x480"
        EndSubSection
EndSection

Or change driver to appropriate value for your card. If still no luck
check the errors in /var/log/Xorg.0.log

Cheers,
GS