Multiple Displays Problem - 3rd display shows pointer arrow only

Using the primary card for alla monitors should give much better performance, why do you need two cards?

The release date for this was 10-2-12. I have already tried it. It still does not work. So there is still no good news for us that have multiple graphics cards in mulitple slots. Still Waiting... 😐

I downloaded, installed and restarted and this driver DID NOT solve any problems, rather when I restatrted, the rotated screens showed as black but the mouse pointer showed. I had to swap the cables (again) to get this to work again.

Mountain Lion is by far the buggiest version of Mac OS X since 10.3 and for what? Nothing really new as far as I am concerned - full screen apps - big deal, not much good if I have to slant my head and/or crawl about swapping cables for 30 mins before I can get the machine to work again after a reboot!

Really poor Apple, 0 out of 10.

It's true that it does not seem to work at all for multiple cards, but OS X have a performance penelty (frame drop) when using multiple cards so why not just get a faster main card and run up to 4 screens on that one?

And if you think this bug is bad, be glad you are not using Windows.

If you are experiencing this problem I'd encourage you to log it as a bug with apple.

Until they start to get bug reports rather than just board posts it's not going to be a priority.

I'm really not going to go out and buy the latest card to run with an old Mac Pro! Besides which I haven't noticed any "frame drop" for what I am doing and was perfectly happy with the system before the 10.7/10.8 "upgrades". Besides which even if I were to buy a new card and it worked in my system, I'd want to use the other two cards to add more monitors and that wouldn't work either, would it?

It's amusing (in an ironic way) that you mention Windows, since, these two updates seem to be aimed at making Mac OS X more like Windows. Well they have succeeded in more ways than one! Not only do we now have full screen we also have buggy software! Well done!

It's already been logged since 10.7 I think.

You can afford a Mac Pro but not a 250$ graphics card that supports 4 monitors?

And why would you need more than 4 screens?

Also, 1x GTX 660 is 5x faster than 2x Nvidia 120 cards

Agree completely on full screen apps - 10.8.x have not given any more productivity, but rather less.

Yeah, it did work at start, but after I rebooted issue is back. 😟

What you are saying is ludicrous! I bought this Mac Pro in 2009 and it was perfectly fine for what I use it for up until this so called "upgrade". To fix it you are suggesting that I spend an additional $2500+ and then what? I'd have to upgrade all my other hardware/RAM (16 GB) too and probably have to buy a whole lot more to boot (like the graphics card) and I'd be left with a perfect good Mac Pro that I could use as an expensive door stop?

And why? Because someone at Apple thought it was a really "cool" idea to turn a Mac into an iPad! But, ironically, you can rotate an iPad!

Right now I'm scared to restatrt this machine because each time I do so, I have to swap the cables abouts, how can this be the world's most advanced desktop Operating System?

Read again, $250 for a GTX 660, it boots without modifications on 10.8.2 with full rotate and support for 4 displays using the latest Nvidia drivers.

And it would work fine on a Mac Pro 2009, so stop whining, it's not like you have any good options right now.

Yeah, exactly the same for me.

I'm going to try disconnecting the rotated Monitors before I restart and then reconnect them once the system has started up and see if this changes anything!

Sorry hit reply too soon in my last post, what I meant to say is, I'm wondering whether if I disconnect the rotated displays (or even better just turn them off) before I Restart and then connect (or Power them on) once the system has booted into the Finder and see if this will stop the need to keep swapping the cables around.

It seems like the bug is on Start Up and I will check this out tonight once I can restart the machine in question and have time to fiddle with it.

What about those of us with 32-bit 1,1's and 2,1's?

I can't add the new card to solve my problem with 10.7 doing the SAME thing.

Any other ideas on how I can use my Visa card to fix the issue?

I have two Apple brand displays and two Apple installed NVIDIA GeForce GT 120 cards. Hot-swap your video cables: this always fixes things until you reboot. If you're lucky, both displays will work once or twice after (complete shutdown and reboot cycles), then you you have to hot-swap again. I did officially report this to Apple Bug Reporting, they gathered more info from me but that is about it. I even tried running both displays off of one video card with a mini-display to dvi adapter as well, no luck, same results.

The suggestion of buying new hardware to address this brand new SOFTWARE BUG is obviously from a whiney fan-boy, not a thinker.