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fixjet: Could you please list exactly what is in your edited org.chameleon.Boot.plist file?

There needs to be a graphics card compatibility list for cards that are natively supported and running two monitors. Many builders are reporting successful builds, but not everybody is running two displays. In my first build I used a EVGA GeForce 560 TI, but in spite of a great deal of effort...

I could not get an EVGA GeForce 560 TI to consistently work with two monitors and Mountain Lion. Currently I have a (borrowed) older GeForce GT9800 card that works fine with dual displays. The question is: what cards work with two monitors?

fixjet: I removed the 560TI and installed the GeForce 9800 GT yesterday and have not had a single dual display issue. Sleep or prolonged shutdown has made no difference whatsoever. Comes right up like a Mac.

Now that the video/dual monitors is now working, I tackled the Boot0 error. After trying without success the procedure for Lion (boot0 Error: The Official Guide), I tried reinstalling Chimera v.1.11.1 in the Bootloader section of MultiBeast. That did it. That was my last issue. I now have a...

I just took out the 560 Ti and put in a GeForce 9800GT that a friend had lying around. Both monitors came up even after an extended shutdown. I can't wait for a solution to get the 560Ti working because the window is closing to be able to return the card.

fixjet: Having to reboot umpteen times or never shutting the thing off is not really a solution. Just another workaround. Pretty frustrating. Here's a question. Does your 560TI work OK in your friend's PC?

fixjet: I left the computer shut down for 45 minutes, then restarted. (I have to do a MultiBeast Flash Card boot to select the boot drive. If I don't, I have boot0 errors.) No second monitor. However, I restarted the computer maybe four times and the second monitor starting working again...

I am in the middle of working through this again. I reinstalled MacOS10.8 with Unibeast on a erased drive partition. The only changes to the BIOS: Initial Graphics=PEG; IGFX disabled. Both monitors are plugged into the 560TI. Multibeast: User DSDT and Audio, nothing else. I've rebooted...

I'm considering returning the EVFA GeForce 560TI card on the assumption that this is a hardware problem. I have no way to determine if this is true or not, but I have not been able to solve this with configuration changes. Using the onboard for one monitor and the card for the other is a short...

Fixjets analysis of the dual monitor issue just about sums it up. I'm experiencing the same thing. I don't know what is wrong. I've spent hours loading configurations, and the only one that works consistently is the hack that allows the onboard graphics to run one monitor, and the card the...

It works with the hack, using the onboard graphics for 1 monitor and the 560TI for the other. The drawback is, of course, that the card will support two 2560x1600 monitors, and the arrangement that we have working won't. I don't have two of those. Yet. I'm running a 1920x1200 Apple 23" and an...

I tried the Hacks by Alpha. One monitor is attached to the on board graphics, and the other one is attached to the outboard GTX560 Ti port. Both came up. This doesn't get the GTX560 TI card correctly configured, but it does get two displays. Correct? If both monitors are plugged into the card...

Grimlock: I attempted to enable the internal graphics (BIOS: IGX), but the result was a kernel panic. I must not be understanding something. What is your optimum configuration? I noticed that when installing a new system from UB that both monitors were up and running. It was only until after...

Fixjet: Now that the box is waking from sleep, I put it to sleep last night instead of shutting it down. This morning both monitors came back up. I think you are probably right. A hard shut down for an extended period and it forgets about the 2nd monitor. Why? Hardware or software? But since you...

Fixjet: I have some time before I have to return the card. What I cannot understand is why both monitors were up and running at one point. I've rechecked the cables, removed and installed the card, and even added the SATA cable as an auxiliary power supply to the PCIEX16 slot the card is in. One...

Update. The original install got to the point that reinstalling the system and then running MB again wouldn't work. The Install would fail. I reloaded 10.8 and ran MB on a different drive partition several times, experimenting with configurations. Installing Audio/Realtek ALC8xx/Without...

I spoke too soon. This morning dual monitors won't work. All along I've seen a quick error message on startup, and finally took the time to write it down. "Error: Bad Display Config Block Signature (0X55455545)." In any event, I loaded OpenGL Enabler, but that didn't make any difference. Now I...

Thanks. I need to reload the system and make sure I have the correct audio drivers selected. One think I can't yet solve is sleep/awake issues. Shut down does a restart. Sleep goes into long term hibernation. I have the power button set to go to sleep or wake up if simply pressed. Hold for 4...

Both monitors are now working. I haven't had time to address the audio issue. There is an exhaustive Realtek ALC8xx setup guide that I intend to work through, but it's for Lion, so it will differ for Mountain Lion. I also have sleep/awake issues. But other than that, the thing is working nicely...