Two Display Cards

So I sprung and got a 2nd display card for my MacPro, in hope of a special screen arrangement.
I had two monitors, set to span.
With the two cards, I now have three monitors... but my options are limited.
I was HOPING to be able to span display 1 & 2, and then mirror display 2 with display 3, but that isn't an option. All you can do is to mirror all of the displays, which is not what I'm looking to do.
Does anyone know of a software solution that will make this work like I want?

Click the "?" at the bottom right of the "Arrangement" tab of "Displays" system preference and scroll down in the help window for instructions on mirroring just some of the displays.
"If your computer is connected to more than two displays, you can specify that some are mirrored displays and others show the extended desktop. For example, if you have three displays, you can have two displays showing the same information and the third display showing the extended desktop. To set up a combination of displays showing mirrored and extended desktop images, set up the three displays as an extended desktop, and then Option-drag a display icon onto another display icon to mirror the two displays."
For best performance, the mirrored displays should be on the same graphics card.

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I currently have two displays running off of one ATI card. Would I be better off putting a second card in a free PCI slot to run display number two. I've noticed that the ATI card divides the 128 MB memory between the two displays. With a second card there would be more memory dedicated to each individual display.
Is this worth it or not? I have the extra card which i believe is an ATA 9200 PCI card.
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ATI Radeon 9000 Pro:
Chipset Model: ATY,RV250
Type: Display
Bus: AGP
Slot: SLOT-1
VRAM (Total): 128 MB
Vendor: ATI (0x1002)
Device ID: 0x4966
Revision ID: 0x0001
ROM Revision: 113-99703-135
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Resolution: 1280 x 1024
Depth: 32-bit Color
Core Image: Not Supported
Main Display: Yes
Mirror: Off
Online: Yes
Quartz Extreme: Supported
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Depth: 32-bit Color
Core Image: Not Supported
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Online: Yes
Quartz Extreme: Supported

on my mac I have a nVidia Geforce4 Ti 4600 128MB DDR 4x AGP.
it has a dvi port and adc port.
I have a 19" Samsung 900DF CRT connected to a DVI to VGA adpater that came with my G4 MDD.
I also have a 17" Philips 107S CRT connected to an ADC to VGA adapter, that I bought for $28 from OWC.
works great for me. extended desktop. I have photoshop menus and palettes on the smaller monitor and the main work screen on the larger.
when i watch movies and stuff watch the movies on the larger monitor.
when I use iMovie and After Effects, I do same as I do with Photoshop.
If I wanted to, I could put a PCI graphics card in the next slot over from the AGP and run another monitor.
that ATI Radeon 9200 PCI looks good... about $130 from OWC.
but what I got works fine...

Two displays for MSI R6950 Twin Frozr III Power Edition/OC graphics card ?

Is it possible to have two displays simultaneously connected to this graphics card:
http://www.msi.com/product/vga/R6950-Twin-Frozr-III-Power-Edition-OC.html#?div=Overview
The card has two DVI-outputs "DVI Output: 2 (Single-Link DVI-D x1, Dual-Link DVI-I x1)". I can use one display at a time and the second display only shows "No signal" error. I would like to use two displays when playing PC games, is it possible with this craphics card? Both my displays have VGA connector cables, and they are connected to the card with an VGA/DVI adapter.

Quote from: Svet on 19-January-12, 22:12:52
what monitors you are using and what resolutions you're trying to use?
Both monitors are old models: 1) Panasonic PanaFlat PF90 2) acer AL 707.
I'm not sure what resolution I was using on acer when I tried to connect both monitors, but now I'm using PanaFLat with 1280 x 1024. Maybe I should try to set them both on 1024 x 768 and try again.

Datasocket does not work with two network cards

If I have two ethernet card in a PC. The Datasocket server does not work if the second card is enabled. It keeps displaying resolving IP Address. I am wondering if there is a solution for this problem.
Thanks

Thanks for you reply. One card has a static address(10.20.35.1), which is used for Data socket, and the other card uses a dynamic IP address. The card with dynamic address is only used for connecting the PC to the company’s network.
The second card, when turned on causes the Datasocket server problem. In the Datasocket Server manager I have only two IP addresses under Permissions Groups. (10.20.35.1 and 10.20.35.11. 10.20.35.11 is the IP address of the remote PC with labview application. The Datasocket is used to transfer data between the two PC’s)
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Two graphics card on macbook pro which one do I use?

I have two graphics cards on my macbook pro. ADM random 6490m (256mb vram) and Intel HD graphics 3000 (512mb vram). My question is which one should I use? I don't do any hardcore gaming or photoshop. I guess that I am just looking for the best display and least buffering if that even has anything to do with the graphics card. I just want to get the most out of my macbook. I appreciate any advice. Thank you.

Your MBP more or less chooses which graphics card to use automatically. In System Preferences>Energy Saver, check Automatic graphics switching. When it's checked on, it will use the higher power and higher quality dedicated AMD 6490 when you're plugged into the wall, and uses the Intel 3000HD when on battery.
I have downloaded gfxCardStatus to give me more control over which graphics card to use. There are times I might want the AMD while on battery, even though it runs hotter and uses more battery life.
Either card will do well with HD movies, though I notice a lot more artifacts with the Intel 3000 when the movie has a lot of action or explosions or sounds. If you want to do hardcore gaming, you need the AMD of course. Photoshop is more dependent on the central processor rather than the graphics card, so I'm not sure you'd have much issue using either one.

What are the benefits of having two video cards?

I currently have a PNY Nvidio quadro FX 3800 video card installed. I have another card that is not installed. It is an EVGA E-GEforce 8800GT. I only want to run two monitors. I am thinking with two video cards I will have live preview on screen during HD video capture. Is this correct? What if any other benefits will I get from running two video cards?

Hello
I am using CS5 with a quadro 4000 card. I have two Eizo's attached to the quadro 4000 via the display port. Everything is working fine. I need to connect a plasma screen to my pc (3 monitors total) for viewing red files. I could use the red rocket to export video to the plasma screen but it would be nice if I didn't have to install another driver other than the quadro 4000 nvideo driver. My question is, will having 2 video cards installed in my pc cause any problems? If it will, I will have to use the red rocket for the third monitor. Thanks
Bill Martz

Two Video Cards in Console?

Hi, I apologize if this may be kind of a dumb question; I have two video cards; an ATI and an NVIDIA card; My question is fairly basic; X11 aside, should I be able to plug both video cards in and get the 'console' to display by default out of both cards? Do I have to do anything special to setup the second card for console (i.e non-X)? I know the OS is detecting both cards because they show up in lspci. The second card (the card in question), also shows up in dmesg. I dont' care if the same video signal is displayed on the second monitor; I just want it to display *something*; I am currently not getting any signal out of it.
Dan Sullivan

The most promising way would be to get framebuffer consoles on both cards. For the secondary card, you will have to load a GPU specific driver that has kernel modesetting. For the primary card, you can either do this or load a generic one like uvesafb. Once you have /dev/fb0 and /dev/fb1 you can move consoles from the primary card to the secondary card using con2fb. I'm not sure if it's in an Arch package but its a C file that has been floating around the fbdev community: http://www.linuxquestions.org/questions … ng-454625/

Can't get two displays to work anymore

We have a computer lab where I work of PowerMac G5's, all which have two 17" LCD monitors attached. One of the computers recently stopped working with two displays and will only work with one. If both monitors are plugged in, the LCD that works will be the one with the "extra" desktop area. If you unplug a monitor, you can get the actual desktop area on the one remaining monitor. The monitors are both fine (swapped them out) and the video connector/converters are fine, as I swapped them with another system that works fine. When looking at "Display" in system preferences, the "arrangement" tab is completely missing on either monitor. I have reinstalled the drivers, (it's an ATI Radeon 9800 xt 256 mg) swapped with another video card from a spare system, and even reinstalled Mac OS X (reinstall/archive feature) and still nothing has happened. I've thought it was a hardware problem all a long, my boss thinks it is software. I'm very new at Macs. Any suggestions?
Power Mac G5 Mac OS X (10.3.8)

If you can find a used one. That is the only dual card Apple was selling at the time. There a other choices now, from adding a PCI card, to replacing your current card with a dual. I'm not sure of the AGP speed of your machine, so can't recommend a specific card, but when you do buy one, insist on a money back guarantee that it will work with your machine. Some cards don't work with all the machines the claim to be compatible with.

Two video cards issue

Any fix for the "Hardware cannot render at the requested size and depth" when having two video cards issue?

Now, the strange thing is: after a few initial issues one of the macs is doing fine. The second one, on the contrary, is a nightmare. Finalcut gives a green screen of death and hangs up suddenly while performing simple operations (like dropping a clip on the timeline).
I'm thinking of trying to replace the two video cards with an older single dual display card, and giving up the fancy lcd monitors (that i bought at vast cost), at least until apple issues an upgrade that adresses the two video card problem. <
If the machines are mechanically equal, it's obviously not the cards. Although you can only be absolutely certain if you swap the cards between machines and see if the green screen issue follows one or both cards.
However, that new LCD display and card combination doesn't have much time in the pipeline so there could be other issues and you're doing the beta testing for all of us. Blaming the reseller is pointless; no one can keep track of all of these issues. We only find out about them only because of reported failures.
You should research the "green screen" here on the forum. I do not recall if there are display or graphics cards issues associated with it. That seems unlikely. IIRC, it appears to be a QT issue.
bogiesan

Two Gfx cards in an MP

It was suggested to start a new topic on this. I do have a 3870 and a spare stock card for my MP. I'm getting a 2nd screen and wanted to drive the smaller screen off the stock card. But it seems two cards confuses Motion, so maybe this is not a good idea. How is Motion affected by two cards?
Thanx
Rob

Motion seems to work well with any number of graphics cards. I have four stupid nvidia 7300 cards on my machine (Apple marketing, we fell for it!). In our case, the cards are next to worthless. I have enough power to drive 8 32" Apple cinema displays but I cannot connect more than two displays to the system because FCP will fail to use most FXPlugs supplied by Motion.
AFAIK: You can sue as many cards as you want in your machines but experiment carefully with Motion and FCP when you try to run more than one monitor. You cannot run them from two cards, you can run them from a single, dual-head card.
I don't think you gain anything in Motion's performance but having two displays is grand.
bogiesan

Problem using two displays...

So I'm running my G5 with OSX 10.4.10 with a Radeon 9800 XT. I have two displays connected. A 23" Apple Cinema display conneded, via a Belkin ADC to DVI adaptor, to the ADC port. The second display is a Princeton VL 1919 connected directly to the DVI port. They both work great.
But there's a problem.
Every 20 minutes, or so, everything will freeze up & the screens will go blue. Everything will hang for a couple of seconds & then return to normal.
It didn't start doing this until I connected the Princeton. Now I know that the Princeton is OK because I used it with my Mini for months & it was perfect. Also, The Cinema Display was perfect on it's own. Not until I put them together on the G5 was there a problem.
I went to the Radeon site to download a new driver, but there isn't one available for the 9800 XT. Only the 9800 Pro Mac & Pro Mac Special Edition.
Any ideas?
Any insight is greatly appreciated.
Thanks for any help offered.

Hmmm...
Well, I just got an email back from the coolerguys. They said that this "Might" work...
http://www.coolerguys.com/840556026433.html
But they can't be sure.
So I'm going to plan ahead & assume that either it will not fit, or I'm going to kill the card when I try to install the fan.
So...
Can you recommend a replacement card that people have been generally happy with? All I need it to do is drive two screens, one of them being a 23" & be able to handle some pretty demanding Photoshop work/Indesign work.
Any advise is appreciated.
Thanks.

How can I have two displays mirrored (4 total) on the mid-2013 mac pro?

Hello.
I have the mid-2013 Mac Pro (last model with PCIe slots). I would like to use 4 monitors; two in the regular extended desktop configuration, with two more that simply mirror the first two. I am sure I need some kind of splitter, or do I need another graphics card?

I am sure I need some kind of splitter
Another alternative is to get enough ports on display cards and use the Mirroring feature in Mac OS X. Any display can be mirrored with any other display by dragging the icon for a display onto the Icon for one you wish to mirror. The resolutions will be reset to one that can accommodate both displays.
This works without adding ANY overhead if the two displays being mirrored are on the SAME display card.

CS4 and Mac Pro with two graphic cards: OpenGL not supported!

I have two graphic cards in my Mac Pro. If a use a dual display setup where both displays are connected to the same card, Photoshop enables OpenGL support (Preferences > Performance).
Switch both displays to the other card, also works fine.
BUT if I connect one display to the first card and the second display to the second card (so each display has its own graphic card) the Open GL support is greyed out (I can not longer use canvas display rotation for example)
This doesn't make sense to me and looks like a bug...

Are you running two of the same cards or are they different? I'm running a pair of NVidia 7300GTs with no issues...and I'm driving a pair of 30" Cinemas and an NEC 26" widescreen. I get better performance on the single 30" than on the card with the two displays. Also note that which PCI slot you are driving the cards in has an impact on their performance...something to look into.

Premiere Pro CC 2014 is crashing when i plug three screens on two graphic cards.

Hi Guys,
my mac pro (2010) is running with two graphic cards (2x ATI Radeon HD 5770 1024 MB graphics).
Premiere Pro crashes always when i plug in two displays on one graphic card and one display to the other one.
when i unplug the third display on the second graphic card, premiere pro is working well.
It would be very great to get some Answers.
Thanks
Damian

Anyone? The Adobe-Chat-Support couldn't help.

Upgrade Display Cards

Currently my display card is a NVIDIA Quadro FX 500/600 PCI. One of the reasons I chose this card is it supprted dual montors. Now that I have upgraded to CS4 Extended I need to upgrade my display card.
When I went to Adobe's List of tested graphics display cards for Photoshop CS4 and seen such a long list of cards for Windows.I thought I would come here and ask if any body else has upgraded theirs. I would perfere to go with a nVidia card. Do any of these cards support dual monitors? Or how can I keep using my two montors? Price wise $250.00 is the highest I can go.
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NVIDIA 9800 GT here. Two 19" CRT's. Seems pretty stable.
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