here is part of my x file.
It will not do the 1920x1080 mode. It says it is not defined.
Jerry
----
Identifier "Monitor0" # "LVM-37w1"
VendorName "WDE"
ModelName "LVM-37w1"
# Block type: 2:0 3:fe
# Block type: 2:0 3:fd
HorizSync 30-80
VertRefresh 50-75
# Max dot clock (video bandwidth) 140 MHz
# Block type: 2:0 3:fc
# DPMS capabilities: Active off:yes Suspend:no Standby:no
Mode "1920x1080" # vfreq 59.934Hz, hfreq 66.587kHz
DotClock 138.500000
HTimings 1920 1968 2000 2080
VTimings 1080 1082 1087 1111
Flags "-HSync" "+VSync"
EndMode
# Block type: 2:0 3:fe
# Block type: 2:0 3:fd
# Block type: 2:0 3:fc
EndSection
Section "Device"
Identifier "Videocard0"
Driver "i810"
VendorName "Videocard vendor"
BoardName "Intel 865"
EndSection