Dual display problem (again)

Ok. The short version:
A few weeks ago my old graphics card on my Mac pro 2007, 8 core stopped working.
I got a new Geoforce GT120 with one DVI and one MDP port.
My displays are two Samsung 20, with only VGA and HDMI inputs.
It all worked on my recent graphics card with 2 DVI out's.
Now the DVI out works perfect (with a DVI to VGA adaptor). BUT, to connect the MDP (Via MDP to HDMI apple adaptor) I have to spend at least 15 minutes plugging out and plugging in every time i start the computer.
It detects a second display, but won't show anything. The strange thing is that it detects the MDP display as primary display, but only when it's plugged in and not working. When all works, the MDP display is secondary.
I hope this makes sense!
Please tell me what to do before i'll dropkick my computer!
Cheers
Matias.

Please anyone?

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Another dual display problem - GeForce FX 5200

I've seen lots of questions about dual display problem, situation when trying to connect two non-apple vga displays to your graphic card.
I have GeForce FX 5200 graphic card, with 2 display output's. And two DELL 17" vga LCD displays.
I manage to connect 1 display regulary with dvi to vga converter, but for other display I tried several difrent converters ADC to DVI to VGA, and it just did NOT work.
G5 could see other display in display settings, in arrange option I coud see two identical displays, but I don't get anu picture (desktop) on other display???
Is it problem with output's on my graphic card (Gforce FX 5200), could it be soloved with some ADC to VGA converter?
P.S. Dr. Bott ADC VGA Extractor is not compatible with GeForce FX 5200????
G5 dual 2.1Ghz Mac OS X (10.3.4)

I've seen lots of questions about dual display
problem, situation when trying to connect two
non-apple vga displays to your graphic card.
I have GeForce FX 5200 graphic card, with 2 display
output's. And two DELL 17" vga LCD displays.
I manage to connect 1 display regulary with dvi to
vga converter, but for other display I tried several
difrent converters ADC to DVI to VGA, and it just did
NOT work.
This won't work if the ADC to DVI adapter is not passing through the analog signals needed for VGA.
G5 could see other display in display settings, in
arrange option I coud see two identical displays, but
I don't get anu picture (desktop) on other
display???
Is it problem with output's on my graphic card
(Gforce FX 5200), could it be soloved with some ADC
to VGA converter?
Yes.
P.S. Dr. Bott ADC VGA Extractor is not compatible
with GeForce FX 5200????
It should work. On Dr. Botts web-site it says:
"VGA Extractor is compatible with any video card with an ADC port in a PowerMac G5"

Dual Display Problem with new MacBook Pro

Hi All,
I just got a new MacBook Pro Core 2 Duo and a 30" Dell LCD Monitor. Both are AWESOME products, BTW. But I am having a weird issue with running both displays.
If I sleep/wake the computer so that I'm never running with dual displays, everything seems fine. However, no matter what I try, I eventually get a system hang if both displays are active at once.
For example, if I turn the MBP off, attach the monitor, and power up, the MBP will get to the login screen. As soon as it hits the logon screen, it hangs.
If I hot-plug the monitor while the system is running, it will detect the new display and activate it as a secondary desktop. But, in anywhere from 5 seconds to 15 minutes (varies each time) the MBP display will turn off and the system hangs.
To me, it seems like a video driver bug or something similar to that?
Thanks!

To those of you that inquired, NO, I have not yet resolved this problem.
I took the laptop into the Apple store, and they decided that it needed a new logic board. Then, once they received the part, and I took the laptop in for repair, they didn't replace the logic board. The guy on the bench reset the PRAM and decided that the problem was resolved. I took it home, and within about 20 minutes the same thing happened.
When I took it back to the store, I was unable to reproduce the problem for the mac Genius.
It still does it, I I just haven't had a chance to take it back to the store to try to reproduce the problem again.

Dual displays problem

Hi,
I just bought two new displays (2x BenQ FP222, 22" widescreen) to use with my new Mac Pro 2.66 (GeForce 7300 GT), but here's the problem: When only the first display is turned on the computer is fine, but when both displays are switched on the picture on both displays goes black every few seconds and then comes back.
I have connected both displays to the computer via 5-metres DVI-cables, which my dealer said would be ok. I understand that I only have the standard graphics card, but as far as I know that shouldn't be a problem unless I try to use dual 30 inch displays.
It sounds to me like it could be a problem with the computer not having enough power to run the two displays (they both use 1680x1050)? Or could it be a faulty DVI-cable?
Has someone got any idea what might be the problem?
/Neworld
Mac Pro Dual 2.66 Mac OS X (10.4.8)

Have you updated the firmware on the nvidia to the latest? Just a thought, but to your comment about powering all the cards...... the power supply will give only 5 volt for each PCI interface rail. The monitors get their power from the AC outlet. As robust of a machine the Mac Pro is, I doubt it will have any issues powerwise even if all of the slots are full. The ATI card requires an additional power cable because it is a much faster card and requires more power than the slot it is in can give it. The nvidia card is smaller and has no fan, only a heatsink. It isn't drawing near the current that the ATI card will, and I haven't seen many, if any posts about dual displays not working on the ATI. Flickering, yes...... but not that it doesn't work. I agree with the other folks that have posted, it's a hardware issue with your video card, or the cables used to hook up the monitors, or possibly the displays are not standard in the way they use the DVI signal.... You can troubleshoot by trying your known good Apple CD on each DVI output, then place it on one DVI and try the BenQ on the other DVI. Make sure you power down in between your tests. This is to make sure you don't blow something, and the video card can reset itself to which display is hooked up. Do either of the BenQ displays work with DVI on either output?..... once you layout your results, you may see a pattern that will help you explain the problem to Apple. I think they may need to send you a replacement video card, but I'm not there to see what is happening. Playing out the scenarios you tested usually makes them pay attention, instead of calling and saying it doesn't work. They put all these issues into a database that they search when customers call with issues. Wow, have I been long-winded!
Good luck
Michael

Dual Display Problems - No Signal After Sleep

So, I just set up my hexacore Mac Pro with stock ram and the ATi 5870. To go along with it, I purchased two Dell U2311H monitors from Dell so that I could finally have dual displays. I then purchased two 6' minidisplayport to displayport cables from Monoprice. Also went with the Apple wireless keyboard and Magic Mouse.
Upon initial start-up, everything worked fine. The monitors needed to be calibrated, but dual display mode worked perfectly without any extra steps. I had some fun messing around for a little bit and then decided to take a break. I put the computer to sleep.
I came back 15 minutes later (couldn't stay away for long), and clicked the mouse to wake the computer back up. I heard the tower humming, but the monitors stayed black. I tapped the keyboard. Still black. Assuming it was some issue I wasn't prepared for with the wireless peripherals, I futzed around with them for a while and had no luck. Still not image on the monitors. I turned the monitors off and then back on only to get an error message explaining that the monitor was in Power Save mode. Some further exploration revealed that the monitors were allegedly getting NO SIGNAL from the computer.
Restarting didn't help any. The only thing that has "worked" is shutting down the computer and connecting a single monitor through the DVI-D cable that came with it. I can then reconnect the displayport cable and switch the input to re-establish dual displays, but this is obviously pretty annoying. It seems like I can eliminate questions with the monitors themselves or the cables. In doing some research, I've found some threads on different sites about people having similar dual display issues attributed to faulty graphics cards. I certainly hope this isn't the case, but I'm at a loss for what the problem might be. It seems odd that dual displays would work briefly only to fail after going to sleep for 15 minutes.
Sorry if this is the dumbest question ever. Is there something stupid that I'm doing wrong? Anyone have any insight?
Any guidance you guys can provide would be greatly appreciated. Thanks in advance!

I have the exact same issue. Here's the forum I've got going: http://discussions.apple.com/thread.jspa?threadID=2686085&tstart=90
I called AppleCare because this issue was out of the box. Engineering wanted to capture some logger information so I ran the logger and sent it off to them.
I am running a Dell 27" via a DisplayPort to Mini-DisplayPort cable (also purchased through Monoprice) and a Dell 22" via DVI to DVI (have also tried with the DVI to DVI cable connected to an Apple DVI-MiniDisplayPort adapter and the same issue arrises). When I boot the computer with any of these cables, I get no video. Only when I boot with a Dual-Link DVI (DVI-D) cable from the 27" monitor do I get any video on screen. At this point, I can then plug in the DisplayPort to Mini-DisplayPort cable and the regular DVI (not Dual-Link) after unplugging the DVI-D cable and I get video. If I restart the computer, no problem. However, if the computer goes to sleep or if I power down and then power back up, I am back to square one with no video and have to resort to using the Dual-Link DVI cable.
Because this was DOA out of the box, they ended up just RMA'ing the machine and re-ordering my CTO Mac Pro 6-core. Still waiting for it to be built, I'll let you know how it goes on the second machine when it arrives.

10.10.3 dual display problems

Like a few other on 10.10.3 with multiple displays i have started having issues with Dual display in that i have a third party application (Freeway Pro 7) which has been working fine, I use the second display to display a variety of other windows, since 10.10.3, OSX cannot seem to remember where these windows should be between sessions of using the App.
So i can use the third party app, then switch to Mail , then back to the third party app and the various windows are all on the main display and the second display has nothing on it at all.
What is going on Apple.

I did not mention this before, but i have another system based on the MacBook Pro and this issue does not appear on this unit.
This system is a registered system on the Public Beta program so i thought it may not be relevant.
John

Dual Display Problem - Mac Pro / 23" Apple Cinema

Hey guys, I'm having a bit of a hard time right now. Here's my situation. I'm using my Mac Pro with a primary HD Apple Cinema Display 23". I just recently stumbled upon a Sony HS95P. I've used this monitor before as a second display a few years back. I bought a " DVI 24+1 male to VGA female adapter DVI-D DVI-I DVI-A " and plugged it into my computer, no problem. Display shows up in system preferences, when I check mirror displays it takes the resolution of the 2nd display and the Sony flashes. However no screen, Blacked on the Sony. When I set up the displays to run into eachother, I can venture my mouse over onto where the other monitor would be, however it's black on the Sony.
What could be the problem? I didn't buy the Apple adapter, but could this REALLY be that serious of an issue? I didn't use it in the past, atleast I don't think I did.. Also could it be the OS? I'm using 10.6.8. Any help or advice/things to try would be awesome... I have two DVI slots in the back of my Mac Pro, gfx card is a NVIDIA GeForce 7300 GT. Thanks guys.

I'm back. Got my Mac Pro back from repair today. Ahhh...25" screen. However, they (the Apple Repair People) have put a new GeForce 8800GT in, to replace the old one.
And the final bill was $380 CDN ($40 for work, the rest for the card, around $300.)
What's Apple's policy on graphics card replacement, even if the customer is paying for it? I thought I asked for a new ATI 5770 card, but maybe I was wrong. I don't think I can take her back in and ask 'em to put a better card in there, and only ask for a bit more to cover the difference in price. I've got a feeling it doesn't work like that.....
thanks
John B

Dual display problems when using keynote, powerpoint etc..

I can run my macbook in mirroring mode and extended desktop no probs but as soon as I run programs such as powerpoint, keynote or presenter software it will run the slides on the MacBook screen and put the control/operators screen on the projected screen/secondary display!!!!
Any idea's as I would like to see the control screen myself and the MacBook screen is obviously to small for me to use to present slides! It sort of defeats the object of having second display...
Any idea's???

Hi,
Under preferences for Keynote - Presenter Display - there is a checkbox option which seems to change which display is used to show slides/information.

FX5900 Ultra Dual Display Problems

I have replaced a Matrox 550 Card with an FX 5900 Ultra in our Video Edit suite computer. We have tried all ways to get it to run on two identical IIyama Computer Monitors without any luck. The installation Drivers & Utilities CD was missing from the carton on delivery and we have downloaded what we could from MSI Website, but the installation software doesn't seem to be available there to download. Can anybody help as to why we cannot get the second display to turn on?

Well usually nvidia's detonators perform the best for nvidia chipset based graphics cards, those also include the support for multiple displays (just as long as your graphics card supports it)
It should all be in display properties, set the right monitor types and stuff at advanced and then configure the primary and secondary monitor
nVidia Drivers (weeee, nice button )

Acroread full screen problem - dual display on Linux machine

Hi:
I am running Linux Fedora core 15 on an HP laptop that I use for presentations. I have dual displays set up and run my presentation software (opera and acroreader) in the external monitor in full screen mode. This works fine for opera, but when I try to use acroreader, it only appears on the laptop's built in monitor when in full screen mode. Any suggestions on how to get it on the external display?
Thanks.

When you normally play iTunes on a secondary monitor (23" Cinema on the side) and then disconnect to go mobile, there's a problem - can't get video window to show up anywhere without changing preferences to have video display in iTunes window or art window. Disabling spaces, checking display, "detect displays", nothing else works.

M93p dual monitor problems; monitor turns off and cannot be turned on again

Hi,
we have multiple M93p tiny computers causing problems in dual monitor setup (VGA / Displayport->DVI). Our users (already >5) keep telling us, they leave their workplace, return, then DVI attached monitor if off and they do not find a way to turn it on. This is true; the only workaround that has been found by our users is to bring Win7/32bit into standby mode and awaking it again.
Needless to say, we turned all windows energy saving options off (computer standby/hibernate, monitor turn off). Still the problem appears.
Maybe there is something wrong with DVI power/DVI signal?
- Monitor independent, as far as I can see
- Independent from Windows energy saving modes
- BIOS updates did not help
[todo]: Try Intel/(AMD?) drivers, let users test.
I haven't seen exactly when the monitor turns off because it is reported by users. I had a testing machine, but was not able to reproduce.
http://forums.lenovo.com/t5/A-M-and-Edge-Series-ThinkCentre/Dual-monitors-problem-VGA-and-Displaypor... is related.
Anyone?
Thx

Make a "Genius" appointment at an Apple Store to have the machine tested.
Back up all data on the internal drive(s) before you hand over your computer to anyone. If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to an empty drive from any of them.) Don’t erase the recovery partition, if present.
Keeping your confidential data secure during hardware repair
*An SSD doesn't need to be zeroed.

Dual monitor problem...

I have had my 13 inch macbook connected to my TV with no problems. Recently I unhooked the laptop to travel and when i connected it back to my TV, it only registers as having dual displays. Before I disconnected it, the TV was the only display shown on the computer, there weren't any choices for screen arrangement like there are now. and when i mirror displays the tv image does not fill out the creen as it did before and is all grainy and unappealing. Can someone please help me get back to how it was...so in short, can I turn off the dual moniters and pick just one display to use. I like keeping my computer closed.

Hi maloneisgood,
In order to use just your TV as your main monitor, first uncheck the Video Clone option from the Monitors panel (under System Preferences). Connect your laptop to your TV as if you wanted to use a dual-monitor setup, then Restart your MacBook, close the lid and keep closed. When Mac OS is fully booted, you can open your lid again.
More info on this procedure: http://support.apple.com/kb/ht3131
Hope this helps!
Ramy
Specialist
Apple Store, Carrefour Laval
+Disclaimer: Apple does not formally provide technical support on the Site. However, any information that is provided by Apple or Apple employees is offered on an “AS IS” basis without warranties of any kind.+

Ideacentre B320 display problem

I'm suffering from a display problem, and cannot figure if it's a software or hardware issue... I'm on Win7 64bit. Here are the symptoms:
1) For a while now, intermittently the screen would go grey (or some sort of a messed up pattern of rgb pixels) and I would have to power down forcefully. The frequency of this has gone up very much in the recent weeks
2) When the machine freezes, I can still hear the music playing, and Windows continues to do whatever it was doing before
3) Recently (I'm guessing after a Windows update), I wasn't able to boot into normal mode anymore. It would show the Windows splash screen, then before the login screen appears it would just go black and freeze. Leaving it for a long time doesn't lead to recovery
4) To try and fix this, I've updated the ATI driver to the latest version, which didn't work so progressively tried every version between the11.6 and 10.3 (4?) which was the default when the machine was purchased. No luck there. I've also flashed the bios and that didn't help either
5) I can boot into safe mode, so I disabled amdkmdap using sysinternal's autoruns.exe, which meant that I can boot into normal mode, but it woud fall back onto Windows' vga driver (1400x1050 only!)
6) Now, even in the low res mode, almost daily the grey screen freezing would happen and I would have to reboot. Tapping the power button allows the shutdown dialog to come up (I'm guessing), and pressing enter would shut down the machine then.
There's an awful lot of posts on the internet regarding people having issues with ATI HD6450 and similar category cards, some of which sound similar to my case. They too experienced the freezing problem and reverting or upgrading the drivers had no effect (many even reinstalled windows completely). It sounds like though, the problem is software in origin at a guess.
On the other hand, the machine is now 3-4 years old and I could imagine that the GPU or graphics memory might have suffered wear and tear -- emailing Lenovo support took a week to get a response, the only thing they asked was whether my warranty is still active (after that it's been a complete silence) are they usually this terrible?
The last thing is, when the problem first occurred I booted using a linux live CD and it was all fine, at full resolution graphics. I haven't repeated this experiment since it takes quite a while to boot from a CD... but suggested that the hardware is intact. In fact, by messing about with the drivers I was able to boot into Windows normal mode and operate for 1-2 days, after which the grey freeze happened again. I haven't been able to get back into that since.
Here is my question: Is there a way to find out whether it's software or hardware that's at fault? If it turns out to be hardware, what are my options at replacements? The GPU is soldered onto the motherboard, so do I have to replace the whole thing? If it's a software issue, would restoring to factory default state fix this issue, given that an unknown update could cause the same issue at any time... This is the last time I will buy an AIO without removable everything.

Welcome to the Lenovo Community !
Probably a good test of the hardware is use the Linux Live CD that you used earlier. If the graphics are still good when using the Live CD then your monitor and GPU are fine.
If the hardware checks out Ok then I suspect you have a driver problem. Try using a driver cleaner to fully uninstall the ATI driver since bit and pieces left over from previous driver installs can cause problems. The link below is for a free and highly recommended utility for cleaning the system of the graphic drivers. After the clean up I would try installing the original driver that came with your system.
http://www.guru3d.com/content-page/guru3d-driver-sweeper.html
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Colour management warning for dual display users

For those of you who require a colour managed workflow and have more than one display, be very careful in Mountain Lion. It appears to have a bizarre bug where images loaded and shown on the primary display (e.g. in Preview) are initially rendered with the colour profile from the secondary display, or something along those lines. Dragging the display window to the secondary display and back again sorts things out. I've filed a bug report.
If your two (or more) monitors have the same colour profile, you won't have a problem. The only workaround I can see is to set your least important display(s) to all have the same profile as your (probably calibrated, if these things matter to you) primary display, at least until (if?) the bug gets fixed.
If you want to see it for yourself, set your two displays to differing profiles - e.g. NTSC (1953) on the primary and Wide Gamut RGB on the secondary. Then load an image into Preview - something with lots of shades of red "works" well for the colour profiles mentioned. Take a screenshot of the Preview window as a reference. Move the window to the secondary display; note the colour shift as it gets re-rendered. Now drag it back to the primary display. It'll look quite different compared to the screenshot you took earlier, despite the fact it's the same image being shown by the same application on the same display in the same window... All you did was drag the window between two monitors and back again.
It doesn't seem to matter if the image in question has a colour profile embedded in it or not. When comparing with your screenshot, feel free to drag the screenshot between the monitors too - after all, it'll be suffering the same rendering bug! You'll still see a different result; in fact it may even be magnified by the accumulated rendering errors.
Preview isn't the only application affected; I've seen identical issues under harder to replicate circumstances in Safari, for example.
Given this fault and others I've seen with colour rendering in Lion, plus several new bugs found in Mountain Lion, I'm afraid that if a colour managed workflow is important to you - well - Snow Leopard or Windows...?! Ugh, what a mess

I've encountered many of the same woes with color management being a graphic designer, but here's my issue:
Have a 15" (Early 2011) Macbook Pro. It is turned on with me hooked up to my Dell U2410 and display open for a dual display configuration. The Dell is my primary monitor.
I then unplug my MBP to use it around the house. I go to plug it back into the Dell for my dual monitor. I notice that the color on the Dell looks good, but now the MBP has a very blue color temperature. Like moving from the preconfigured 'Color LCD' profile to 'sRGB' which definitely shifts to a blue color on the MBP.
I check the color profiles in System Settings and the Color profiles are correct. 'Dell U2410' for my Dell and 'Color LCD' for my MBP. But as I said, it's much bluer than standard. I try to change the color profiles around on the MBP and no matter which I select it's always the same color with no shifts I would expect to see.
Only solution I have found is to restart my computer. Upon restarting all is well again in the world.
It's pretty annoying having to restart my computer everytime I plug it back into my workstation with Dell and keyboard.
Related note: USB does not work when I plug things back and again have to restart to fix this.

Hyperlinks in Dual Display mode, Keynote '09.

This problem has been well reported in this forum,but I cannot find an answer.
I have created a series of Keynote '09 presentations and I have installed hyperlinks on the last slide of each one to open, on clicking, the subsequent presentation.
Trouble is in Dual Display (not mirrored) mode using a projector as Secondary Display and a MacBook as Primary Display (with next slide, presenter notes, timers, and other items that only I, as presenter, can see. Then I cannot activate the hyperlinks; in fact the icon of small blue circle and white arrow is not showing in this mode and the pointer does not change to finger.
However if I press X or use "Swap" from drop-down menu I can see the view of slide that the audience normally sees and the hyperlink is shown and active. I click on it and once the subsequent Keynote opens, I can press X again and return to Presenter View on MB, but this is messy and the audience gets to see the "workings". Not a good look.
Interestingly, the same disappearance of hyperlinks also occurs if I use Rehearse Slideshow, but not if I use Play Slideshow when MB is not hooked to external display. This seems to suggest thst these hyperlinks are not there in "Presenter" view.

I found I had the same problem at my let presentation: Hyperlinks do not work in dual display using the MacBook at primary display. I gave up and put the presentation on my iPad and everything worked fine. Think I will just mirror the display of my MacBook so I can use the hyperlinks.

Dual display problem (again)

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