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