Configuring Xorg for a 720p TV

This will show how to force output of 720p to a TV

Configure the xorg.conf

Section "ServerLayout"
Identifier "Default Layout"
Screen "Default Screen" 0 0
EndSection
Section "Module"
Load    "glx"
EndSection
Section "Monitor"
Identifier      "CRT-0"
HorizSync       31.0 - 69.0
VertRefresh     59.0 - 86.0
Modeline        "1280x768_60"   79.50  1280 1344 1472 1664  768 771 781 798 -hsync +vsync
Option          "PreferredMode" "1280x768_60"
Option          "DPMS"
EndSection
Section "Device"
Identifier      "NVIDIA GPU GeForce 9400"
Driver          "nvidia"
Option          "NoLogo"        "False"
#       Option          "TripleBuffer   "True"
Option          "IgnoreEDID"    "True"
Option          "UseEDID"       "False"
Option          "UseEDIDFreqs"  "False"
Option          "UseEDIDDpi"    "False"
Option "RegistryDwords" "PowerMizerEnable=0x1; PerfLevelSrc=0x3322; PowerMizerDefaultAC=0x1"
EndSection
Section "Extensions"
Option "Composite" "Disable"
EndSection
Section "Screen"
Identifier      "Default Screen"
Device          "NVIDIA GPU GeForce 9400"
Monitor         "CRT-0"
DefaultDepth    24
SubSection "Display"
Depth   24
Option  "MetaModes"     "1280x768_60"
#               Modes   "1280