If I remove me VRAM.....

[haemogoblin]

Will the machine default to the PCI ATI rage and stop telling me I have 2 monitors?

Just it's driving me nuts, opening windows off screen that I can't see.

 

[Elfen]

An easier way is to go into the Monitors section -> resolutions/colors and move one of the displays over the other until there is only one display and turn on "Monitor Mirroring"

 

[haemogoblin]

Hmm I tired doing that, but odd things began to happen, I'll give it another go. Btw where do i find "Monitor Mirroring"

 

[Elfen]

What System/OS are you running? And What Mac?

 

[haemogoblin]

PM8500 and Mac OS 9.2

I think I have it sorted...for some reason if I dragged both monitors on top of one another the display would shrink with a inch thick border around the desktop image. I think this was because the PCI card can to 800x600 and above and the onboard was saying it couldn't. I messed around with it and ended up with the Mac to vga adaptor plugged in to the Mac, while the monitor was hooked up to the PCI video card. Suddenly the on board video now lists more resolution the before.

 

[Elfen]

Those Mac to VGA Adapters are tricky to deal with. You really have to play with them to get the resolution you want.

Congrats if you got it going!

 

[haemogoblin]

Only thing is, I'm not actually using the adaptor. It's plugged in to the back of the Mac, but the monitor is connected to the ati rage. But for some reason, this has fixed the problem. Still tempted to simply remove the vram.

 

[Elfen]

Yeah, that's the funny thing. There are certain "Sense" Pins/Wires in the adapter, I think 3, and setting them in the adapter tells the video card what it is connected too without it being connected to a monitor. So as long as it works, that is important.

 

[haemogoblin]

What I dont get is, why does having the adapter in the back, suddenly increase the number of resolutions the onboard video can support?

I'm still thinking that removing the ram might be a better solution, as I'm still getting windows appearing off screen.

 

[Floofies]

What I dont get is, why does having the adapter in the back, suddenly increase the number of resolutions the onboard video can support?

I'm still thinking that removing the ram might be a better solution, as I'm still getting windows appearing off screen.

Most of those adapters use the sense pins to tell the Mac what video resolutions the monitor is capable of supporting. Usually this is set using dip-switches on the adapter itself. It also determines what resolution to use/force when the Mac starts up.

 

[waynestewart]

Removing the VRAM may not help. I've used video cards in a lot of 7600,8500, etc and never once had the Mac think a non existant monitor was connected the built-in video port.

 

[haemogoblin]

As it has been suggested, this is most likely the result of having the video adaptor plugged into the machines built in video port.