How do I turn on graphics acceleration?

Zinc requires hardware OpenGL acceleration for the PC and Mac applications. If Zinc has warned you that hardware acceleration is turned off there could be a couple of causes that are easy to correct. First check to see if the display properties are turned off:

Then check to see if your power settings have turned off the acceleration in an attempt to increase battery life when unplugged. Try plugging the laptop back into its charger, and restart Zinc. To check your power saver settings: