XFX Radeon HD 6450 Disable Secondary Display

[king13p]

I managed to get through my most of my hackintosh build.

Right now I have a XFX Radeon HD 6450 hooked up through VGA.

I will be using HDMI soon. I have two problems.

1. While hooked up to only one monitor through VGA, Mountain Lion sees another VGA hooked up.

Is there anyway to disable this extra monitor. I tried just doing Mirroring but that results in resolution set back to 800x600.

Hooking up through HDMI shows the same resolution and DVI doesn't work at all.


2. When I hook up through HDMI to my TV, Most of the picture is cut. You can't see the Menu bar and I would say a few inches from

each side are cut off. I noticed this is doing this even at the bios screen. Is this my TV causing the issue? Its a Vizio tv. Any suggestions.

Any help would be appreciated. Thanks

 

[yahve]

Same problem here : http://www.tonymacx86.com/graphics/71395-gigabyte-6450-hd-silent-problems.html#post444619

Do you find a solution ?

Thanks for your help

 

[yahve]

I found the solution by using original ktext and patch the pithecia personality:
http://www.osx86.net/view/3125-xfx-sapphire_ati_radeon_hd6450_pithecia_patch.html

Thanks to Arunamz!