Troubleshooting Mac OS X Display Resolutions

iMac G5 1.83 GHz
20 inch display
GeForce FX 5200 64MB VRAM

Mac OS X 10.4.8 with all the lates updates as of 12.26.2006

For some reasons the Displays System Preferences only allowed two different resolutions: 640×480 and 1680×1050.

None of the following steps able to fix the problems:

  • Deleting display preferences ( etc)
  • Replace Display.prefPane (/System/Library/PreferencePanes/Displays.prefPane)
  • Resetting NVRAM
  • Zapping PRAM
  • Use AppleJack to repair permissions, etc.

The solutions is much simpler than the steps above. Install Mac OS X 10.4.8 Combo Updater again.