Mac Pro :: Won't Work With Expose Performance Dual Monitors On ATI 4870

Jun 16, 2009

I recently purchased a second 22" Dell 2209WA to go with my Mac Pro. They are both running from the ATI Radeon 4870 on my Mac Pro (2009 Quad) but the Expose performance seems to be really quite poor. Displaying all the windows is very juddery and not smooth at all. Is that what I should be expecting now? I wouldn't have on a �2000 Machine. Going into Spaces is fine, it's just Expose thats poor.

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Mac Pro :: Unable To Work With 4870 Dual Monitors

Jun 16, 2010

I have an issue with my 4870 (Mac edition) that has been occurring since day one (when I purchased it last month), but it's not something that happens every single time.

I've run into a problem that the 4870 has trouble recognizing one or both monitors plugged in. If I shut off power to my displayport-connected main monitor, it'll throw the menu bar, all the desktop items, and application windows onto the second monitor (DVI-connected). This also happens when I shut off the second monitor (desktop items and app windows get shuffled to the main monitor).

The other issue is that on startup, it may just be slow to recognize one of them, and the above screen-swapping issues happen anyway, followed seconds later by the screen once again being recognized.

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Mac Pro :: 4870 Unable To Recognize Dual Monitors / Display Not Giving

Sep 3, 2010

I have an issue with my 4870 (Mac edition) that has been occurring since day one (when I purchased it last month), but it's not something that happens every single time.

I've run into a problem that the 4870 has trouble recognizing one or both monitors plugged in. If I shut off power to my displayport-connected main monitor, it'll throw the menu bar, all the desktop items, and application windows onto the second monitor (DVI-connected). This also happens when I shut off the second monitor (desktop items and app windows get shuffled to the main monitor).

The other issue is that on startup, it may just be slow to recognize one of them, and the above screen-swapping issues happen anyway, followed seconds later by the screen once again being recognized.

Has anybody else faced this issue? Is there something that can be done? This shouldn't be happening, right?

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Mac Pro :: Won't Work With Two Monitors On A Flashed 4870

Aug 19, 2009

I have bought a flashed 4870 for my 1st Gen Mac Pro and it works fine. But yesterday i wanted to plug a second 23" ACD in and woundered that its not working.

Can i flash my card with another ROM so that i can use two monitors? In a german forum there are some people who has the same card and for them it works with 2 monitors.

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Mac Pro :: Won't Work With Dual 4870's / Can't Work With 2nd Graphic Card

Jul 17, 2009

In the last 2 weeks before my MP shipped, I've asked 3 Apple Geniuses at Apple stores and Apple Tech support about running dual DVI 23" Cinema Displays with 4870's. They ALL said I would need a second card. When I attempted the install, there were only 2 power cord clips on the back face of the main board. Both being used by the onboard Radeon 4870. What to do next? Another call to Apple support offered me a nice Indian girl who I could not really understand. Finally, I called a local non-Apple shop that I frequent for hardware and service issues. The very nice service tech told me to take the 2nd card back, since that original 4870 will drive 2 monitors perfectly, in my case, with a simple Mini DisplayPort to DVI adaptor for the 2nd 23" display.

how would you install any 2nd graphics card, if a 4870 takes up both power clips?

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Mac Pro :: Does Mini Display Port To Dual Link DVI Adapter On 4870 Work Correctly?

Mar 23, 2009

Has anyone tried hooking up a two 30 ACD's to a 4870 on their MP.. just want to check if there are ANY issues with this setup.

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Mac Pro :: Updating To 10.6.3 - Now Dual Monitors Don't Work?

Mar 29, 2010

I have a Mac Pro 1,1 with a flashed ATI Radeon HD 4870 XFX. Had no problems with it ever.

Installed Mac OS X 10.6.3 software update and now the second monitor says No Input detected. Switched second monitor to first monitor and it worked fine, but the second DVI port no longer works.

Need to get this figured ASAP as I have a lot of work to do today... very unhappy with this update. Anyone else having a similar issue or have any thoughts on what to try? I've done everything I can think of.

Do I need to flash it again? Seems silly to have to flash it every time you update the OS. The video card is still recognized in System Profiler. HD 4870 with 1GB GDDDR5 VRAM.

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Mac Pro :: Won't Work With Dual Monitors On MP1,1 & 5,1 / Can't Find Setup

Jan 6, 2011

I need a bit of insight as to how to maximize the performance (and if there is any) with dual display setups on both my MP1,1 and 5,1.

First off, MP 5,1. Currently I'm running a 30" ACD off a DVI and 23" of a MDP to DVI on a 5870. The 30" is my main work display - the 23" is pretty much running trivial things, like browsers, finder, iTunes, etc. Since VRAM is being split between the two displays, would I benefit from installing a second video card to just run the 23" monitor and dedicate the 5870 to just run the 30" ACD? If yes, what should I use? I have an old 7300, but If there's anything better out there that's non cable powered, I'll get it. Also, there are times (rarely) when I need to run Windows 7-64bit to do some 3d CAD work - would having video cards from different vendors (hence different drivers) cause W7 to go nuts (conflicts, etc)? I can live with just the 30" on W7. I want to get get the most out of 5870 and 30" ACD while not running into conflicts under OS X by introducing another video card.

Second, MP 1,1.
It's windows 7 64-bit machine only. I have OS X installed, but since I use it for work I never boot into it. It's running a 27" display (1920x1200) on DVI and 23" (1680X1050) on MDP to DVI adapter. Again, the bigger display is my work area, and the smaller one runs browsers, outlook, etc. I do 3d CAD work, so more VRAM I dedicate to my main display, better it is. So back to my original question...what are my options? I do have that 7300 hanging around, but, again, I'm not so thrilled on mixing video card vendors and drivers. Should I just get some sort of low grade Windows based ATI Radeon card (don't care much of OS X on that machine).

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MacBook Pro :: Won't Work With Dual Monitors / Can't Find Setup

Sep 9, 2010

I have a new 2010 MBP and I'd like to hook up two external monitors to it, more specifically, two ASUS VW246H 24-Inch Widescreen LCD Monitors. Either via HDMI or DVI connections. I've found various usb monitor adapters, but i've read that many can't quite 'keep up' and I really can't seem to find a solid solution out there.
So does anyone have a dual monitor setup they currently use, if so, what are you using to connect the mini display port to both external monitors.

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Mac Pro :: Unable To Use Two Monitors / Flashed 4870 For 1st Gen

Dec 2, 2008

I have bought a flashed 4870 for my 1st Gen Mac Pro and it works fine. But yesterday i wanted to plug a second 23" ACD in and woundered that its not working. Can i flash my card with another ROM so that i can use two monitors? In a german forum there are some people who has the same card and for them it works with 2 monitors ...

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Mac Pro :: Flashed Sapphire 4870 512 / Not Displaying Both Monitors

Feb 23, 2010

I went for flashed Sapphire 4870 512 off eBay for my Mac Pro 1,1 running SL 10.6.2, with two Viewsonic VP2030b. The guy selling the card had sold flashed cards before and had 100% feedback, said the card worked with dual monitors and supported SL. Got the card, installed it without a problem, but could not get it to work with both monitors. Second monitor said no signal on both DVI channels. Checked all the wires, reinstalled, rebooted, no luck. Plugged both into my 7300GT, no issues at all. At one point, I got the left monitor to boot as the extended desktop, showing the dock but not showing the HDD or icons (which should be on the right screen), but the right screen still showed no signal and was black. Used the gather windows botton in the display preferences to see if adjusting settings helped, still nothing. Detect displays button was no help either. Is this a compatibility problem on my end or a flashing problem on his? Contacted him and he said he had no issues with his MP 1,1 and two 20" Apple displays.

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OS X :: Two Monitors Connected Via DVI To A Flashed XFX 4870 - One Monitor Is Not Working?

Apr 9, 2010

I have a new issue with my Mac Pro (3,1 - 2008), it just popped up (and I don't think it was caused by 10.6.3, I remember this working correctly after it was installed I have two monitors connected via DVI to a flashed XFX 4870. The 4870 has never given me any trouble.In the Energy Saver settings, I usually set the machine to never sleep, and the displays to sleep after 5 minutes. This used to work great, never had any trouble with it, ever. Now, the displays don't go to sleep after 5 minutes, they just stay on with a screensaver.

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Mac Pro :: Flash Video Performance On ATI 4870

Sep 1, 2009

Today I just bought and installed an (Apple) ATI 4870 for my '06 Mac Pro. It's all gone pretty smoothly, however I have noticed that flash video playback from sites such as Youtube and Vimeo are jerky. Have I missed something about installing a 4870 into an older MP? I thought it was basically plug and play - even though it's not officially supported by Apple. Quicktime movies are nice and smooth. This is under Snow Leopard, so I'm not sure if the problem exists under Leopard but I could probably move my last bootable backup drive into an enclosure with firewire and check things out.

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OS X :: Slow Graphics Performance When Using SL Expose And Spaces

Aug 29, 2009

I am seeing very slow performance when using spaces and expose in 10.6. I am on a mac mini with the 9400m graphics chip. It worked perfectly in Leopard, and now it runs at what appears to be 1fps. Sometimes it doesn't even seem to animate, it just jerks into place, from starting point to the end. I realize one solution could be "do a fresh install" but that seems like quite the pain at the moment, and is extremely undesirable. The upgrade worked perfectly on my macbook pro with similar specs. Is there anything I can reset or reinstall that might refresh the graphics performance?

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Mac Pro :: Flashed 4870 With Dual-DVI Support?

Jun 6, 2009

I recently flashed my Sapphire 4870 1gb card and haven't been able to get dual monitor support working in Mac OS. Has anyone been able to get this working on a Sapphire 4870?

It works fine in Windows, not sure why it wont work in MacOS as I imagine the 10.5.7 drivers should be doing all the work.

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Mac Pro :: Brand New Mac Pro - 4870 Able To Run DUAL 24" LED's?

Aug 15, 2009

I've been searching now for 2 days and i've read so many different things it's ridiculous. All i need is for someone to confirm that YES it is possible to run dual 24" LED cinema displays from a single 4870.

One would hook up to the mini display port, and the other thru the DVI port.

Also, anybody have pics of their dual display setup?

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Mac Pro :: HD 4870 + Mini DisplayPort To Dual-Link DVI Adapter?

Apr 29, 2009

Are there still flicker issues

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Mac Pro :: Dual-Link DVI With Flash 4870 Versus 4890

Aug 27, 2009

which card I need in order to have dual dual-link DVI?

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OS X :: Spaces And Dual Monitors?

Oct 26, 2007

I'm curious if anyone has tried out Spaces with Dual Monitors yet?I'm not sure if it will matter or not, would kind of be cool to be able to specify which space goes to which monitor.....I have a New iMac with extra 20" LCD and will be upgrading to Leopard tonight, so I guess I'll know then...just wondering what to expect.

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Mac Pro :: 8800 GT Dual Monitors Don't Fit?

Mar 4, 2008

So I was using my second monitor to run my G5 while transferring files to my new 3.2 octo, and then the past week I was using it to transfer my old PC files to my new PC. Now I finally just went to hook it up as my second monitor on my Mac Pro, and found out that I CAN'T FIT BOTH DVI CABLES TO THE PORTS!!!

They're too close together so I can fit one monitor into either port, but not both simultaneously. My monitors are the aluminum 23" ACD's w/ DVI.

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OS X :: Dual Monitors Act As One Virtual?

Apr 20, 2009

I was wondering if in anyway possible on a mac I can make my two monitors at the moment act as one virtual monitor? Know what I mean? So I want like one extra wide resolution which would cover both screens, not a separate resolution for each. Hope this is possible, much be in some way.

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Mac Pro :: Mac Pro And Dual 24" ACD Monitors?

May 18, 2009

Does anyone have dual 24" Apple Cinema Display monitors hooked up to their Mac Pro?

If so how did you hook it up, buy and adapter or?

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MacBook Air :: Dual Monitors On 2.1 Ghz

Jul 30, 2009

Is it possible to run two monitors independently via a hardware device with the macbook air? I would like to do it with a device that works well but doesn't cost a fortune.

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OS X :: How To Use Hot Corners With Dual Monitors

Sep 12, 2009

Does anyone know how to get hot corners to work on dual displays? I had a monitor plugged into my MBP 2.5ghz and after changing the relative location of the monitor in display settings, left of main screen to top of main screen, the lower left corner would allow me to access Expose for the applications in the current monitor, instead of exposing all application windows on both screens. This feature is very helpful though I cannot repeat it. Is there a certain orientation of the monitors that will allow each screen to have it's own hot corners functioning for that screen of was this just a fluke?

it would be nice to be working on one screen and watching a movie on the other without the movie expose ing when I only want to expose the applications/windows on the monitor who's corner I accessed.

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Hardware :: Best Way To Add Dual Monitors

Nov 5, 2009

So as of now I have my 13" MacBook White connected to my Dell 20" S2009W, and I'd really like to add another S2009W, but I'm looking for the BEST possible solution to do this. I've looked at DualHead2Go, and Diamond.

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Mac Pro :: How To Setup Dual Monitors

Mar 2, 2012

how to setup dual monitors. I have a 2009 Mac Pro with a ATI Radeon HD 4870. I dont see the options in the Display settings. Also I I get nothing on the second monitor?

Info:
Mac Pro, Mac OS X (10.7.3)

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Intel Mac :: How To Set Up Dual Monitors For It

Apr 24, 2012

I have an intel imac and would like to set up a second monitor to allow for more simultaneous side-by-side space when I do programming/editing.  As I'm not interested in paying $1000+ for an apple monitor, I'd like to use a third party one.  Thus far, I think I need a VGA to MiniDVI adapter [url], but then can I use ANY monitor that has a VGA port?  And then will it be as simple as plugging in the second monitor and detecting it?  Will the iMac screen remain unchanged?  Will the computer just "know" when I scroll across one screen to the other

Info:
iMac, Mac OS X (10.6.8)

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Mac Pro :: Won't Work With 24" ACD To 4870 / Can't Work With Adaptor

Mar 13, 2010

I just picked up a second 24" ACD with the mini display port. I already have one, so the mini display port on my 4870 is in use. So I think I need an adaptor to go from the MDP on the second display to the DVI on the 4870.

However, this adaptor has a male MDP and a female DVI. The ACD has a male MDP, so I think I need an adaptor which is a female MDP and a female DVI.

I find it a little strange that it is so difficult to put two identical monitors on the Mac Pro. I did search the forums, but kept getting hits for the above adaptor and I am not sure how it would work.

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PowerPC :: Mac G4 Quicksilver - Dual ADC Monitors?

Sep 10, 2010

Just picked up a minty Power Mac G4 Quick Silver and two ADC Studio Displays. I'd like to hookup both displays, but I only see one ADC port. What's my lease expensive dual ADC display option for this machine?

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IMac :: Using 21.5": Dual Monitors

Dec 21, 2010

I do not know much about this, so if i don't explain clearly, ask and i'll try again.

So basically, i have an iMac 21.5" Late 09 model here and a LOGIK TV next to it that has a channel for 'PC', i was wondering if it was possible to use them as 'dual monitors' for the iMac?

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