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Dual monitors dvi [help] - hd radeon 6870 / 10.8

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Dec 7, 2011
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[SOLVED] Dual monitors dvi - hd radeon 6870 / 10.8 Graphics Enabler=Yes

I want to have 2 monitors working on DVI with my Radeon HD 6870 graphics card.
I know its possible with some changes but I haven't found a solution for 10.8
I want my GraphicsEnabler=Yes (Because I need a fully working Graphics card for my Video editing & Motion graphics)

I don't mind giving away some money for an adapter, but which adapter should I buy for my 1920x1080 LG IPS235 monitor?
I've also tried to connect the second monitor trough HDMI to HDMI but the monitor turns off when I bypass the login screen...

Help me!
BIG THANKS!

**********
SOLUTION = LOOK AT POST #3
**********

Greets,
Tigerking9
 
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I was running dual monitors just fine on my 6870 until 10.8.2. I messed with it for several days until I finally gave up.

I can only get two monitors working with GraphicsEnabler=No but then I have no acceleration. It sounds like you have a similar problem.

I have a miniDP to DVI adapter that works on my MBP but it doesn't enable a 2nd monitor on my 6870. It may work for yours.

This is the adapter that I have:
http://www.amazon.com/Tera-Grand-DisplayPort-Connector-Packaging/dp/B006FKRSUY/ref=sr_1_sc_1?ie=UTF8&qid=1362450640&sr=8-1-spell&keywords=tera+grand+minidp+dvi

Good Luck!
 
Joined
Dec 7, 2011
Messages
66
Motherboard
Mountain Lion
CPU
I7 2600
Graphics
Radeon 6870
Mac
  1. MacBook Pro
  2. Mac Pro
Classic Mac
Mobile Phone
  1. iOS
SOLUTION FOUND!!!

To connect Dual Monitors to the "HD Radeon 6870" graphic card with GraphicsEnabler=YES and mac v10.8 :

- I bought an Active Displayport to Single Link DVI adapter (Active is important) (Around 25$)
This is how it looks: http://www.newegg.com/Product/Product.aspx?Item=N82E16814999030

- Before I plugged the DP to DVI adapter in my graphic card, I also included this in my Boot.plist

Yes, Duckweed and not Gibba...

<key>AtiConfig</key>
<string>Duckweed</string>
<key>AtiPorts</key>
<string>5</string>
<key>Graphics Mode</key>
<string>1920x1080x32@60</string>

Without the Graphics Mode, my second monitor was flickering like a disco ball...

- Enjoy your Dual monitor!!!
 
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