Mini displayport not working for DVI (VGA works)

So I've just received my new MacBook Pro, I ordered it with a mini displayport to DVI dongle.
When I plug this in to my known good DVI monitor, nothing happens no video is sent to the display and the preferences do not show anything.
However when I connect using a displayport to VGA to a VGA monitor it works. I know the displayport adapter is good as I have it working on my 27" iMac.
Could this new MacBook Pro be faulty??
Cheers,
---Guy

Hey. I think there's a big problem with the mini displayport - DVI signal. I have a samsung T220HD monitor which worked fine with my old Macbook. I upgraded to a MBP 15" and I find the same monitor just has dead signal. Aside from the MBP itself, the differences are Snow Leopard and the mini displayport adaptor. I too ordered the adaptor with the MBP but on finding this and reading so many problems on discussions I opted to buy a mini displayport - HDMI adaptor made by NEET - which solved the problem.
However, some wierd things happen when playing games. Resolution (which is otherwise fine) goes dark and displays ugly artifacts. This never happened with the same monitor on a DVI signal using the mini DVI - DVI. I'm guessing either all this is a Snow L prob or a mini displayport thing.
It looks like a recent OS update (10.6.2) was supposed to fix DVI issues but apparently not for me. Apple really really need to sort this out.

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Thanks ... Ken

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Hello,
From the news page here...
http://xlr8yourmac.com/
See if it's related to this...
It also seems to be related to later OSX versions, like 10.8.x & 10.9.x
The 2012 macs (and later apparently) (also later OSX versions on earlier Macs can do it also), not waking normally from sleep after hours being in sleep. (noted here ...
http://www.xlr8yourmac.com/archives/feb13/022813.html#2012macswontwake
"Why 2012 iMac/2012 Mac Mini won't Wake After Hours of Sleep (Hibernates/Powers Off)")
The sleepimage file still reappears even if never slept. Delete it (hibernate off, etc) - within minutes its back.
A note on that here - http://www.xlr8yourmac.com/feedback/Chameleon_SSD_Optimizer.html
About iMac sleep...
http://forums.macrumors.com/showthread.php?t=1529750
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http://xlr8yourmac.com/archives/sep13/091313.html#10.8.5SleepEjectTip
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http://tinyurl.com/7ndy8tb
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You may have to do this several times.
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~~~~~~~~~~~~~
‘iPad is disabled’ fix without resetting using iTunes
Today I met my match with an iPad that had a passcode entered too many times, resulting in it displaying the message ‘iPad is disabled – Connect to iTunes’. This was a student iPad and since they use Notability for most of their work there was a chance that her files were not all backed up to the cloud. I really wanted to just re-activate the iPad instead of totally resetting it back to our default image.
I reached out to my PLN on Twitter and had some help from a few people through retweets and a couple of clarification tweets. I love that so many are willing to help out so quickly. Through this I also learned that I look like Lt. Riker from Star Trek (thanks @FillineMachine).
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6. The iPad will start backing up before it does the full restore and sync. CANCEL THE BACKUP IMMEDIATELY. You do this by clicking the small x in the status window in iTunes.
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~~~~~~~~~~~~~
Try it and good luck. You have nothing more to lose if it doesn't work for you.
 Cheers, Tom

HT204149 What is the maximum resolution available for use with the Apple Mini DisplayPort to Dual-Link DVI adapter?

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Hey guys,
I found out an answer by myself...
The missing link : the MacBook Pro needs to be powered... as in you need to plug the charger in...
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So i'm doing a new setup with 6 monitors (Eyefinity 6), and i've got everything set up so far... Except for adapters. So i went and got 4 Of those Accel MDP to DVI SL adapters, in addition to the two passive that come with a card. Didn't work...
So i got two Apple Mini Displayport to Dual Link DVI Adapters... And boy, I should have read the reviews before buying them. They are giving me very strange issues. Not going above 800X600, serious graphics corruption on the monitors connected to the apple adapters, or odd resolutions that the monitors do not support.
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I've also heard something about a firmware version, 1.2 or something. Is there a way to update the firmware of these?
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-C

I'm using the Sapphire 5870 Eyefinity 6 Edition. Two of them in crossfire, supplied their power from an external 1200W PSU Devoted just to them.
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MBP + Mini DisplayPort to Dual-Link DVI Adapter + 30" = blue flickering

Hi everyone,
I was wondering if anyone has found a solution to this problem? I use an Apple 30" Cinema Display and it worked fine with my Late 2007 MBP. Now I got a new Core i7 MBP and the Mini DisplayPort to Dual-Link DVI Adapter. At first all works fine, but after a while of use I get blue (and sometimes also green) flickering pixels in areas that are supposed to be black. This does usually not matter while working, but watching movies for example is completely unbearable.
I’ve read a few threads, but most seem to have different problems like 1/3 of the screen flickering or the external display going completely off for a second. That is no issue over here. It is just that the longer I use my setup the more flickering gets added. At first I thought I don’t suffer from this, because it goes from practically flicker-free to totally weird flickering when everything is in use for more than a few minutes.
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Any recommendations or solutions are really welcome!
Things I already tried:
- different USB ports for both the adapter and the Cinema Display
- other power outlets
- powering the adapter from a USB hub or via an iPod wall charger
Thanks
Björn

Björn Herrmann wrote:
I would even try out crazy adapter combinations if there were any available...
At last! I’m quoting myself, because I finally found an alternative adapter which works! I have no more flickering pixels/lines. Black looks and stays completely black as it should! I can finally use dark backgrounds again and watching movies with black borders or dark areas is no longer a pain.
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Hope this helps others, too!
Björn
PS: This adapter seems to be normally meant for ATI’s GPUs in order to connect 3 displays which they call Eyefinity.

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I just brought the new iMAC 27" iCore7. Previously I was using old MBP with dual link DVI to DELL 3008 and they did fine.
But Today I connect the Dell 3008 to my new iMAC using Mini DisplayPort to Dual-Link DVI Adapter...They could not work properly...
The dell shows images in red with flickers....
I've contacted the phone for help...and they said nothing could be done????!!!!!
Anyone could help??
THX

just update my progress...
I had made calls to Apple technical support center in HONG KONG for help...
To my surprise...they even did not understand what I was saying(Or just pretending...)....One interesting guy said I could take the new iMAC back to service center to change the 4850 display card to older version...or call DELL for help!!!!!
Fuxking Apple technical support center in HONG KONG
I was almost hopeless until I found a minidisplay port to display port cable in Circuit Assembly:
http://estore.circuitassembly.com/products/Mini-Displayport-to-Displayport-Adapt er-Cable.html
ONLY $14.95 !!
They sent the cable to me in 3 days time...and I hooked it up right away when I received it today...my Dell 3008 could display 2560 x 1600 normally again!!!!!
The problem is: Apple is still selling its FUNCTIONLESS Mini DisplayPort to Dual-Link DVI Adapter at high costing....sounds like cheating others....
What' s wrong with the Apple nowadays???

TS3232 I have the mini DisplayPort to Dual-Link DVI Adapter firmware 1.03 and I still have screen flickering issues

I have the mini DisplayPort to Dual-Link DVI Adapter firmware 1.03 and I still have massive screen flickering issues on a Mac Mini 2012.
I am using a Dell 30" monitor (it's the Samsung screen just rebranded) connected to a WD 4TB Thunderbolt drive connected to the Mac Mini.
The screen is usable for the most part when I've just started the computer (although today I started having issues after a fresh restart) but if even just the screen goes to sleep, or the computer goes to sleep and I wake it later, I start to have massive flickering to black and occasionally to snow.
The effect seems to be more likely to arise when I'm on heavy graphics-intensive websites or programs (eg, Tumblr feed with lots of GIF images or working in Adobe Premiere), but once it starts shutting down those programs has no effect, the screen keeps flickering wildly.
The problem improved after the 1.03 firmware upgrade (for a while it was flickering uncontrollably ALL the time and was virtually unusable) but it has not gone away.
Any suggestions would be very welcome, either for how to fix this issue or how to get Apple to, you know, let me TELL THEM that their adapter firmware fix has NOT solved the issue, since my phone support has expired. :/

I have a new Mini DisplayPort to Dual-Link DVI Adapter to allow my original Apple 30" Cinema Display to connect to the new Mac Pro. Shipped straight from Apple, it is firmware version 1.03. I've never had flickering issues, but the display will often go black (possibly after a screen power save) and not come back. when this happens I am still able to connect to and use the Mac via remote connection. But the only way to get the screen back is either to unplug the adapter and plug it back in to the Mac, or to shut down and power up the Mac. This may be a separate issue, so I'll also post it standalone...

Mini displayport to dual-Link DVI Adapter - flicker issue resolved

I have a late 2013 Imac 27 inch and I had a 30" Dell 3007wfp as my second monitor on the standard DVI adapter for a while at low resolution. I finally got off my behind and bought the mini displayport to dual-Link DVI Adapter... I was excited to see it in all it's glory. It immediately started flickering wildly and I thought I'd do some reading to see how I could resolve it. Pointers to making sure the adapter was version 1.03 didn't help.
http://support.apple.com/kb/ts3232
I already had it. I was getting ready to bite the bullet and just take it back when I decided to see if I had another DVI cable to swap the one I was using out "just in case". I found another one.. same length. Darn it. Then I noticed the DVI cable diameter I was using was significantly thinner than the one I found in my box of etc... What the heck? I thought.
Connected it and BOOM! Vivid colors, high resolution, no more flickers!! Issue gone. Happy days!
Thought I'd post this to possibly help the next schmoe who is in the same situation

Hello,
From the news page here...
http://xlr8yourmac.com/
See if it's related to this...
It also seems to be related to later OSX versions, like 10.8.x & 10.9.x
The 2012 macs (and later apparently) (also later OSX versions on earlier Macs can do it also), not waking normally from sleep after hours being in sleep. (noted here ...
http://www.xlr8yourmac.com/archives/feb13/022813.html#2012macswontwake
"Why 2012 iMac/2012 Mac Mini won't Wake After Hours of Sleep (Hibernates/Powers Off)")
The sleepimage file still reappears even if never slept. Delete it (hibernate off, etc) - within minutes its back.
A note on that here - http://www.xlr8yourmac.com/feedback/Chameleon_SSD_Optimizer.html
About iMac sleep...
http://forums.macrumors.com/showthread.php?t=1529750
Try this: "sudo pmset autopoweroff 0" and "sudo pmset standby 0"
http://xlr8yourmac.com/archives/sep13/091313.html#10.8.5SleepEjectTip
Two users reported that the opposite worked...
Try this: "sudo pmset autopoweroff 1" and "sudo pmset standby 1"

17" MacBook Pro to 30" HD Display issue using Mini DisplayPort to Dual-Link DVI Adaptor.

Just replaced the Western Digital hard drive on my MacBook Pro with a SSD now running Lion 10.8.2, (updating from Snow Leopard latest version).
I have a 30" HD Apple display monitor and very much love using it.
The issue.
The MacBook Pro will only allow the 30" Monitor to display its top resolution when the unit is closed, when it is open it shows either 2 screens or mirrored screens depending upon the settings, but not at the top resolution capable by the monitor.
Now, when I was using Snow Leopard on the previos hard drive, I could close the MacBook Pro and put the computer to sleep also putting the 30" Monitor to sleep, I could then wake the computer while it was closed with my external keyboard and the screen would wake showing the FULL resolution possible on the 30" Monitor.
Then I could open the lid of the MacBook Pro and the screen would stay black allowing ONLY the 30" HD Monitor to be used effectively as a desktop computer, without the complication or need to display 2 screens or mirrored screens but most importantly the fans wouldn't need to work overtime due to the MacBook Pro being closed cutting off vital ventilation through the 2 air ducts to the left and right of the keyboard.
For some reason I cannot do this with Mountain Lion, the compluter needs to be closed in order for the 30" Monitor to display top resolution, and the fans are working overtime and the unit is getting really hot.
My concern is that the MacBook Pro will overheat, the screen will be damaged as the MacBook does get exceptionally hot when running design and audio packages, even Adobe Flash sets the fans off, and lastly the computers speakers are muffled which is more of a moo point.
If anyone could shed some light or offer a solution I would be most appreciative.
My specs:
MacBook Pro 17" Mid 2009 3.06 Intel Core Duo, 8GB 1067 MHz DDR3, NVIDIA GeForce 9600M GT 512 MB, OS X 10.8.2 - connecting to an Apple 30" HD monitor with a Mini DisplayPort to Dual-Link DVI Adaptor.
Thanks
Christian Zav

Thanks for your quick reply! I want to think I'm not technically challenged, but... are you saying to go from minidisplay on macbook directly to the firewire in the back of the monitor? Or should I try to attach it to that ugly bunch of cables at the end of the monitor cable (dvi, usb, firewire and the power adapter thingy)? Either way, it seems like I might need yet another cable? Like Mini-display to... ?
I feel like my mother asking these questions... At any rate, when I called the guy at apple support last time he acted like it was a Miracle that I had anything on my cinema display at all if I had a minidisplay cable plugged into the thunderbolt port. He said that didn't work (but obviously it did, at least a little) I DID get a picture, it just wouldn't display at the 2560x1600 resolution. More like 1680xsomething. fuzzy and big. I want my pretty picture back.
Thanks so much for your help.

Switching between Dell 4K display and Apple Mini DisplayPort To Dual-Link DVI Adapter

Hi All,
I've recently upgraded my home setup to a Dell 4K display (Dell P2815Q), which since the 10.9.3 update work as expected.
However the downside is that my office setup uses a Mini displayport to Dual-Link DVI adapter (Firmware version 1.03) and a Dell 30" display (2560x1600), which will not work without a reboot after using the 4K display. If I use the 4K display after using the Dual-Link DVI adapter it works fine.
Is this a know issue ? If not, I'm happy to provide some more diagnostic information to help resolve the issue.

http://www.everymac.com/ says:
*This model supports a simultaneous maximum resolution up to 2560x1600 on two external displays via Thunderbolt. Alternately, it can support a single display up to 2560x1600 via Thunderbolt and a single 1080p display at up to 60 Hz, 3840x2160 at 30 Hz, or 4096x2160 at 24 Hz via HDMI.
DVI is not mentioned at all. You probably need to connect to the display via HDMI to get the 4096x2160 resolution.

Mini displayport not working for DVI (VGA works)

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