Monitors won't wake from system sleep

cooltoff

Registered
2 weeks ago, I installed a Apple OEM ATI Radeon 9600 Pro Video card, modified by OWC to work with pre Mirror Door G4s.
My system is set to sleep overnight. Upon waking up, the monitors do not wake up with the rest of the system.
This was not an issue with the stock video card.
Current ATI display driver has been installed. v4.5.7, I believe.
Since that time OWC tech support has suggested:
>zapping the pram
> pulling the lithium battery for 5 minutes, to do I can't remember what. Drain the cmos, I think.
>removing the PCI ATA driver card
And we've swapped out the card itself for a new one.
I have tried single monitors in each port alternately.
All has been for naught. The problem persists.
Anything obvious I'm missing?
 
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