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QTI · Dec 3, 2006, 02:14 AM

I just purchased a X800 XT AGP video card for my G5 Dual 2G, which is currently using a ATI 9600 Pro.

The problem is, when I plug this card in, the system won't boot. I can hear the startup chim but the screen just remains dark and I don't even get to the gray screen.

I tried zapping the PRAM, and the problem is still the same. Won't even boot in safe mode when I keep the shift key pressed down.

The machine works well when I put back in the 9600 Pro.

The card probably isn't a lemon as the seller brought 5 of those to my place and all of them have the same problem (he claimed that all of the cards work at his office and he tested them all).

I have already installed the latest drivers etc downloaded from the ATI website.

Anyone has any idea as to how to fix it?

Many thanks.

brokenjago · Dec 3, 2006, 02:25 AM

Are you sure it's for the Mac?

QTI · Dec 3, 2006, 02:57 AM

I don't know as a fact but the seller said so and said he tested all the 5 cards on his G5.

Is it possible for me to verify this?

voo · Dec 3, 2006, 09:14 AM

Originally Posted by QTI

Is it possible for me to verify this?

It shouldn't have a molex connector at the end for the PC version, where the thors hardware logo is.

As you can see with the Mac version it doesn't exist.

QTI · Dec 3, 2006, 09:28 AM

Thanks voo... then mine does look like a Mac edition. It doesn't have the thingie you mentioned...

Cadaver · Dec 3, 2006, 09:34 PM

There is a firmware revision that, depending on why the card is misbehaving, fixed this issue. Check the ATI website.

QTI · Dec 4, 2006, 04:30 AM

Thanks, will look for that. But can I flash the ROM without being able to boot up? I can install whatever I can with the original 9600 Pro plugged in, but so far no success in booting up with the X800...

Leonard · Dec 4, 2006, 08:39 AM

Have you tried resetting the SMU on the PM G5, after inserting the card? How to reset the SMU on a Power Mac G5 (Late 2004) or Power Mac G5 (Late 2005)

That's about the only thing I can think of.

I don't know if I installed the ATI drivers as the ATI drivers come with the MacOS and I think I figured they would be up-to-date since my MacOS was up-to-date.

happymac · Dec 8, 2006, 01:41 PM

what type of monitor are you using, Apple Display? and are you using any type of adapter? It should have a DVI and VGA port. You might want to try different configurations with the hook up.
good luck

QTI · Dec 9, 2006, 06:46 AM

Tried everything I can find on the net and nothing works... yes its a 20" apple display... returned the card to the seller in the end..