Mostly WORKS on ATI Cards and the GMA 900.
- Open com.apple.windowserver.plist
- This file is located in /Library/Preferences
- Change the Quartz2DExtremeEnabled value to YES.
If you would like to enable Quartz 2D Extreme (see this hint for more info on it), but don't have the VRAM to support it, you can change the minimum requirements by following these steps in the Terminal:
$ cd /System/Library/Frameworks/ApplicationServices.framework/Versions\
$ sudo pico Configuration.plist
Once in the editor, change these values to match your machine (use System Profiler to get the required details):
Both of these methods keep Quartz 2D Extreme enabled across reboots.