Can't dual screen with GIGABYTE Radeon HD 6850

[riycemd]

Well this is what my boot list looked like when i entered your suggestion:

<key>EthernetBuiltIn</key>
	<string>Yes</string>
	<key>GenerateCStates</key>
	<string>Yes</string>
	<key>GeneratePStates</key>
	<string>Yes</string>
	<key>Kernel</key>
	<string>mach_kernel</string>
	<key>Kernel Flags</key>
	<string>npci=0x2000</string>
	<key>GraphicsEnabler</key>
	<string>Yes</string>
	<key>AtiConfig</key>
   	<string>Duckweed</string>
   	<key>AtiPorts</key>
   	<string>4</string>
   	<key>Darkwake</key>
   	<string>0</string>
   	<key>PCIRootUID</key>
   	<string>0</string>
	<key>Legacy Logo</key>
	<string>Yes</string>
	<key>Timeout</key>
	<string>2</string>

Still have no result. BTW I'm using textedit to edit my chameleon.Boot.plist is there a fancy way of doing it? maybe thats what I'm doing wrong.

 

[shibirian]

Well this is what my boot list looked like when i entered your suggestion:

<key>EthernetBuiltIn</key>
	<string>Yes</string>
	<key>GenerateCStates</key>
	<string>Yes</string>
	<key>GeneratePStates</key>
	<string>Yes</string>
	<key>Kernel</key>
	<string>mach_kernel</string>
	<key>Kernel Flags</key>
	<string>npci=0x2000</string>
	<key>GraphicsEnabler</key>
	<string>Yes</string>
	<key>AtiConfig</key>
   	<string>Duckweed</string>
   	<key>AtiPorts</key>
   	<string>4</string>
   	<key>Darkwake</key>
   	<string>0</string>
   	<key>PCIRootUID</key>
   	<string>0</string>
	<key>Legacy Logo</key>
	<string>Yes</string>
	<key>Timeout</key>
	<string>2</string>

Still have no result. BTW I'm using textedit to edit my chameleon.Boot.plist is there a fancy way of doing it? maybe thats what I'm doing wrong.

Try to boot with

<key>Kernel Flags</key>
<string>arch=386 npci=0x2000</string>
<key>PCIRootUID</key>
<string>1</string>

You could also try to add (if you use it):

<key>UseKernelCache</key>
<string>Yes</string>

Have you installed a DSDT from the database, too?

 

[riycemd]

Um it didn't work as well... and i do have the DDST.

I think ill just get a new graphics card.. what do you guys recommend?
I do a lot of drawing with the cintiq 21 and gaming on LOL so i dual boot.
preferably one that can dual screen..

 

[titsmgee]

@syqher
You need OpenGL to run DVD player and you need GE=yes for OpenGl support

I am currently in the same situation as everybody here. Macman wrote somewhere that he could not get both DVI ports to work, but got dual monitors running one DVI and one DisplayPort so i thought i would purchase this:
http://www.monoprice.com/products/produ ... 1&format=2

Have yet to receive. Will fill you in when i get the cable in 2-4 days

 

[titsmgee]

SUCCESS!!!
So i have the DP->DVI cable and it works beautifully. Only had a 720p secondary screen to test on but i did have the full res of my main 2560x1600 display and full 720p on the other.