display won't wake up

Apr 5, 2010
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I have an older Power Mac G4 Duel 500 MHz currently running the latest version of Tiger.

When the computer goes to sleep, the display will not wake up. The computer appears to be awake (makes noise, power button stable). I tried moving the mouse, pushing keys on the keyboard... nothing. The only thing I've been able to do to work around the problem was a cold reboot.

Things to note:
-I reset the PRAM
-I recently used ONYX (Tiger Version) to run all the automated maintenance defaults. I also checked "Optimize the System"... not sure if that did something to it or not.
-I connected a different monitor to the computer and I had the same problem

Any suggestions or ideas would be greatly appreciated.


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