Mountain Lion on 6850. Everything works perfectly except for my dual monitors

[Andykayy]

So after a little fiddling, I followed this guide:

http://www.tonymacx86.com/mountain-...-working-dsdt-not-required-37.html#post440472

And got a perfect install of Mountain Lion. Sound is fine, networking is fine, stability etc, everything looks good. The one thing I can't get working however is my second monitor. When I boot up from the hard drive like normal, only one shows up in the display tab of the settings menu. The only way I got it to work was running via the boot menu and inputting GraphicsEnabler=No. That seemed to fix it, but I don't want to have to do that every time I turn on the system. Is there a way around this? Or a way to make it enter this command every time?

My other specs: i5-2500k, Gigabyte Z68MA-d2h-b3, Corsair SSD.

Thanks very much

-Andy

 

[Andykayy]

Nobody has any advice to offer on this? Still having trouble =/

 

[hoe1026]

I have patched ATI6000controller.kext for MSI Cyclone 6850, dual monitor works with DVI GE=Yes, 10.8.2
PM me know if you want to give a try

 

[SubXero]

If you want to set GraphicsEnabler=No as a default boot setting, change it in your boot configuration file in /Extra./ org.chameleon.Boot.plist.
Just right click on the file and open with Text Edit and scroll to where GraphicsEnabler is and either delete the lines
<key>GraphicsEnabler</key>
<string>Yes</string>

or Change it to
<key>GraphicsEnabler</key>
<string>No</string>

Close text edit and the changes will be saved. If you need GraphicsEnabler again, type it into Chimera on boot and change it back to what it was.

 

[Andykayy]

Thanks Hoe1026. Have PM'd you.

What limitations will graphics enabler being off impose on the system SubXero? I did a little reading, and it seems like that might hinder me a bit. I may need to do some graphics work on it from time to time, so I can't limit it much in that regard.

Also an update. I did a fresh install following the above guide, but this time I also followed the Mountain Lion 6XXX guide found here:

http://www.tonymacx86.com/mountain-...mountain-lion-6xxx-gpu-issues-fix-inside.html

Now my card shows up correctly in the info tab as an ATI Radeon 6850, and when I boot up, the two monitors are both on displaying the boot screen, but once I hit Mac OSx itself, the second monitor shuts down.

Any more thoughts?

 

[hoe1026]

Sorry for late reply, see attached for patched kext.

Thanks Hoe1026. Have PM'd you.

What limitations will graphics enabler being off impose on the system SubXero? I did a little reading, and it seems like that might hinder me a bit. I may need to do some graphics work on it from time to time, so I can't limit it much in that regard.

Also an update. I did a fresh install following the above guide, but this time I also followed the Mountain Lion 6XXX guide found here:

http://www.tonymacx86.com/mountain-...mountain-lion-6xxx-gpu-issues-fix-inside.html

Now my card shows up correctly in the info tab as an ATI Radeon 6850, and when I boot up, the two monitors are both on displaying the boot screen, but once I hit Mac OSx itself, the second monitor shuts down.

Any more thoughts?

 

[Sonic-NKT]

i have exactly the same problem!
im running 10.8.0 (just installed, was afraid to update yet ) and both Displays only work with Graphicsenabler=No in my chameleon config.
Everything works fine with this config (card gets detected as ATI Radeon 6XXX) except Source Games on Steam (like Portal, Half-Life, CS, TF) those games quit before they really started. Other 3D OpenGL games (Appstore for example) work fine...

With Graphicsenabler=Yes those games work fine but my second monitor doesnt work anymore. (the Card now gets detected as Ati Radeon 6850 1024MB ).
Will this modified controller kext help me?

I just got everything working again (did a clean 10.8 vanilla install) and dont want to mess to much up

 

[hoe1026]

Are you using MSI HD6850?

 

[Sonic-NKT]

no im own a sapphire.