Mini Displayport DVI Adapter Problem

I'm currently having issues with my MacBook Pro's DVI out (via Apple Mini-Displayport Adapter). Whenever my displays go to sleep (which is set after an hour) and wakes up, sometimes the external display (a SyncMaster 220WM) shows "snow" or "static" ... basically what you'd see if a TV station had no reception. If I let it sit for a minute, the second display will return (the MBP's primary display is fine, no errors of any kind). If I power off the Samsung display, the MBP treats the connection as if I pulled the cable out and reverts to a single screen setup. I have been able to reproduce this by using "Hot Corners" to sleep and wake up the displays. I'm using the 9600m GT as the computer is my desktop replacement. I never had this happen to me before with my older MBP with an 8600m GT using the same DVI cable and display. I think it's the mini-displayport adapter. Is this a common issue. Anyone else having these problems.
Thank you!

I have been experiencing the same flickering problem when using the mini Displayport output on the GT120 to drive secondary monitors at my office. Using a Monoprice cable instead of Apple's adapter provides a more stable signal, but we still get intermittent flickering where the screen goes black for a second, then a full image returns. I think this issue is due to massive loss of signal strength via the mini Displayport output on the GT120 card. Hot Plug Detect is also weak which points to low signal strength. This might be fixable by increasing the output voltage of the card slightly to boost the signal strength. Apple really should just issue a firmware/BIOS fix for this problem since the implementation of mini Displayport on these cards seems poorly engineered. Does anyone know how to do this?

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MacBook Pro restarts unexpectedly after removing mini displayport-DVI adapter

Hi all,
I did a clean install of Mavericks a little while back. Since then I have been noticing an issue with my Mid-2009 17" MacBook auto-restarting, and have reduced it when I remove my mini displayport-DVI adapter.
I usually work with my macbook closed, connected to a Dell 24" external monitor connected via DVI. When removing the adapter the macbook quite often goes to the grey screen telling me that the machine must force restart. It is becoming really frustrating.
Anyone know about this issue or found a workaround?
Thanks in advance,
Ben

Hi emeidos,
If you are having intermittent forced restarts with yoru MacBook Pro, you may find the following article helpful:
OS X: When your computer spontaneously restarts or displays "Your computer restarted because of a problem."
http://support.apple.com/kb/TS4636
Regards,
- Brenden

Mini displayport DVI adapter while running windows?

Does this work? I bought one and I can use it on my macbook running os x but I dont get a picture when I run windows xp.
Anyone know how to get it to work? I've been googling and so but no luck so far!

How did you get it to work? I have no problems using my MiniDisplay -> VGA adapter on my external display, but when I use my MiniDisplay -> DVI adapter the screen just flickers

Mini-DisplayPort- DVI- ADC

A couple of my users still have old ADC Cinema Display monitors that are otherwise working correctly through DVI->ADC boxes. Has anyone had any luck chaining the MDP->DVI to the DVI->ADC connector to get this setup to work properly?

As far as I know, Apple's DVI->ADC adapter is the only one available. Here it is:
http://store.apple.com/us/product/M8661LL/B?mco=MTIxOTI1OA
Of course you'll also need a Mini-DisplayPort->DVI adapter:
http://www.monoprice.com/products/product.asp?cid=104&cp_id=10428&cs_id=1042802&pid=5106&seq=1&format=2
You can buy one from Apple, but it will cost twice as much.

Mini Displayport - DVI - HDMI 5V?

I kind of have an odd setup desire for an external display. I want to send video and audio to my entertainment unit from my MBP across the room. I already have audio sorted out (mini optical -> 30ft optical cable), but the video is a bit more difficult.
What I would like to do is have the Mini Displayport from my MBP go into my Mini DP -> DVI adapter (http://bit.ly/do7McJ). From there, a DVI to HDMI cable would take me to a HDMI over CAT5e/6 wall plate (http://bit.ly/C0bJg). This extender would then go to the TV.
The problem here is that the HDMI over Cat5e/6 extender needs the HDMI's 5V power source. Now, I have followed the pins all the way from HDMI (http://bit.ly/P2wWx - Pin 18) to DVI (http://bit.ly/TNJv5 - Pin 14?) to Mini Displayport (http://bit.ly/BCpof - Possibly pin 20)
Now I guess my real question is does anyone know if this will pass through 5V power: Mini DP -> DVI -> HDMI?
Thanx in advance.
EDIT: My other option would be this (http://amzn.to/gV9PKH), however it is much more expensive and the single Cat5e/6 cable would probably reduce quality.
Message was edited by: austinhab

@Lambstechie - Now that I read into it, if the signal is converted, it can pass over 1 cat6 cable. What I was referring to is a cheaper converter, where an HDMI channel is connected straight to a Cat5/6 channel. And since HDMI 1.3 can work 100% perfect on 16 channels (just no ethernet, audio return, etc.) it seems like 16 channels over two 8-channel Cat5e/6 cables seems fit.
Also, I did not specify this earlier, but the total HDMI (not Cat5e/6) running distance will be under 10 feet, probably around 6 feet. Now when you say the loss of signal strength will happen around 15 ft of HDMI, does that include the distance running Cat5e/6 (approx. 30 ft), or just the HDMI length (6 ft).
@Eww - I see where you are coming from, and I did not see the price of those cables until now. That seems like a great deal. Thank you.
Message was edited by: austinhab

Mini Displayport to DVI Adapter Problem on Mid-2009 Macbook Pro

I have a new mid-2009 Macbook Pro hooked up to a 20" Samsung 2033sw LCD with a native 1600x900 resolution using a mini Displayport to DVI adapter that I bought off of EBay. No matter what I've tried I can't get anything to display on the external Samsung LCD higher than 1024x768. I tried switching between GPU's and that made no difference. Any ideas.?

Michael, thanks for the reply;
When you open System Preferences/Displays does a second preference panel open up OK on the Samsung ?
Yes, but I can't see it unless I select 'gather displays'. Then it appears on the MBP LCD, and showing the correct resolution - 1600x900.
Is there an Options Tab visible under which you can check 'Overscan' ?
None that I can find. Only display and color tabs.
Is the Refresh Rate set to 60.0 Hertz
Yes, that is what it shows in Refresh Rate.
I also pulled out an older LG LCD that is fairly generic, .e.g. it has DVI in at 1280x1024. Same problem on that LCD ... nothing higher than 1024x768, but this time at 1280x1024 I get major noise and screen distortion. The displayed image is jumping all over the place, but at least there is something displayed.

Mini Displayport to DVI adapter problem

Using a mini displayport to dvi adapter results in a jumpy mouse and a delay on screen when typing text. I've searched for days, but couldn't find the answer. I am using an iMac 27" i7 8GB and as additional monitor a Philips 220WS.
Can anybody help me?

I havent seen the text issue yet but I dont think I tried typing because I use the cpu with two screens for editing and I got frustrated and unplugged the second monitor. Ill try it and get back to you. Thanks for chiming in we need to get a solution to this as its one of the main features for me.
I wonder if we can call apple with this one as it seems to be a defect.

13" MacBook Pro (Early 2011) doesn't detect display over mini DisplayPort HDMI adapter in Mountain Lion 10.8.2

Hi to all.
I have a problem connecting external display (Dell U2311H) to my 13" MacBook Pro (Early 2011).
I use Tecklink Mini DasplayPort to HDMI adapter (http://www.techlink.uk.com/products/wires_cables/wiresmedia/wiresmedia_media/wir esmedia_mini_displayport_plug_to_hdmi_plug), but since U2311H doesn't have HDMI input, I also use Manhattan DisplayPort to HDMI Adapter (http://www.manhattan-products.com/en-US/products/8101-displayport-adapter).
And nothing.
The display is not detected, no picture or even external monitor presence at all.
I even reset PRAM, and installed 10.8.2 Supplementary update.
I also plugged and unplugged all I could, with no luck.
As I can see on Apple discussion, it is a common problem with 2011 MacBook Pro's.
It seems like the problem is in Thundebolt port, it somehow does not work properly.
If anyone has solved such ploblem, please let me know.

In reply to my own post have to say appologies to Apple whose Thunderbold port I used to blame.
Shame on me)
So, what was my problem?
Guess what?
Manhattan DisplayPort to HDMI Adapter !
The point is it's actually do only what it said to do, converts DP to HDMI.
But I for some reason thought it can be used vice versa, to be HDMI to DP converter))
I was wrong.
I bought new one HDMI to DVI adapter and now I HAVE external display!
Thunderbolt works like a charm.
So I'm very satisfied now.

With 10.5.7 the MDP-to-DVI-Adapter problems are still alive!!!

I can't believe it. After more than a half year the problems with external displays (that are not Apple Cinema Displays) connected through a Mini DisplayPort-to-DVI-Adapter are still alive.
All that unacceptable screen flickering and wobbling is not fixed!
<ironic>I know we all should buy Cinema Displays...</ironic>
Be ashamed, Apple!

+1 on this issue.
Just tried it here and i still can't connect my MBP 15" U on the Dell 2408WFP via DVI on full resolution (1920x1200 60Hz).
it only works at miserable 800x600 75Hz.
What can we do? Apple should replace this faulty macs for ones that work (even if its the big 17")...

Xserve's mini displayport (dvi to vga) not working with snow leoapard

I am using a Acer 20" display with the mini displayport to vga. and since I updated to snow leopard it is not working anymore. If I change the resolution it is recognized but it is a very bad resolution and as I have a wide screen the resoltion that works looks horrible.
I saw that the update 10.6.2 had some updates including mini displayport problems, but it seems like it did not fixed the problem that I have!
I tried to call the apple support hotline but I got kicked out twice after the agent asked for my serial number and online I could not find anything that could help me to fix my problem.
so if there is someon out there with the same problem or an idea how I can fix that problem I would be very happy!
greetings from spain / barcelona!
cheers!

If there are listed options available, changing the refresh rate of the display frequency in the Monitors preference pane will sometimes yield better results at given resolutions.
I have to Xserves connected via a KVM switch to a CRT monitor; one Xserve is using the DisplayPort/VGA adapter, the other is straight VGA from the video card. I had to fiddle with the refresh frequencies to get the images to come close to matching.
-Doug

Mini DisplayPort - DVI - Video

Hi
Just bought two adapters from the iStore, Mini Display Port to DVI and DVI to Video.
The reason for this is that my (old) TV does not have any digital inputs at all.
However, when I connect the computer to the TV I don't get a signal. When I connect the adapters the screen flickers briefly and then nothing.
Is there something wrong with my adapters or can this not be done?

It can't be done with what you have there. You need a mini-Displayport to VGA adapter and a converter box like this:
http://www.amazon.com/PC-To-TV-Video-Converter/dp/B001CJOLBW/ref=pdcp_e2
Then you'll need an RCA male to RCA male video cable to run from the box to the TV, and if the TV has audio inputs, you'll need a separate audio "Y" cable with a mini stereo headphone plug on one end and two suitable plugs (most likely RCA, but look at your set to confirm) on the other.

Macbook Pro Mini Displayport to HDMI problem Please Help!

I just bought a new Macbook Pro Core i7 15" and have it connected to a [URL="http://www.amazon.com/Samsung-P2370HD-23-Inch-1080p-Monitor/dp/B002DHS398 "]Samsung P2370HD[/URL] via a [URL="http://www.kanexlive.com/products/item-id-3689.html"]Kanex Mini Displayport to HDMI cable[/URL]. I'm running Snow Leopard 10.6.3 and have the resolution @ 1080p via system preferences and the "underscan" feathered a bit... (which I do not understand why I have to do this since I'm outputting at 1080p and the monitor accepts full 1080p as well. Can someone explain this?) however, small text is grainy, some larger bold text has a white wash behind it. Most things seem to have a slight blur as if there is a screen zoom happening just slightly. [URL="http://www.mac-forums.com/forums/apple-desktops/181687-mac-pro-samsung-ln 40b530-display.html"]As described in this similar post I found.[/URL]
My old setup was a late 2007 Macbook Pro 15" 10.6.3 connected to the same monitor I have now via Dual-Link DVI and it was crystal clear... It's hard to believe that the issue lies with Samsung, I've tried the same setup on my Sony Bravia in the living room, being that it's a much larger tv...I can't notice the artifacts as much but they are still present. Something is off.
My only other option I feel is to try a Mini Displayport to Dual-Link DVI but I chose the HDMI route for it's standardization and when I go to meetings/projections it's convenient to have one cable. Yes, I've checked cables, restarted everything ect... Can anyone help me troubleshoot this?
Thanks in advance!

Switched to a Mini Displayport to DVI cable and it works flawlessly. Still no idea, why the hdmi cable does not work properly.

Mini DisplayPort to VGA problem

Hi, all!
My New MacBook can't work with external display with resolution more then 1360x768 using Mini DisplayPort to VGA connector.
Then I'm setting bigger resolution (for ex. 1920x1080) display shows me picture for a 2-3 seconds, then switches off, and on again.
Tested 3 monitors and one tv.
Any suggestions?

Hello
I have this Problem too, my monitor best resolution is 1680 X 1050 but I can not set it, i have only 1600*1200 or 1440*1050, what can I to do?
but i don't have this problem with my MacBook Pro 10.6.4, I have best resolution 1680*1050
Emad Falsafi
Message was edited by: Emad Falsafi

HDMI/DVI adapter problem?

I've had the 1st gen Apple TV since it came out and have loved it. It has worked fine on my 5 year old Sony HDTV. Since this tv does not have HDMI inputs (has an DVI input), i used an HDMI/DVI adapter and this worked fine up till now.
Yesterday i got the new apple TV and tried hooking it up to my tv. But the picture was displayed in 4:3, low resolution (looked to be 480i), and was a little "wavy".
Is the problem that my TV is not compatible with the new apple TV?
Or i was thinking that maybe i need to get a new HDMI/DVI adapter. the one i have is a few years old. are the newer adapters on the market have new/better technology?
thanks for anyones help. i really don't want to have to replace my tv or return my new apple tv

I've been pulling my hair out on this. I have a Sony KV-34XBR800 with a DVI port that supports HDCP. According to the manual the HD suport is 1080i and 720p ..... perhaps also 480p and 480i, but i'm not sure if the latter two are supported on the DVI port. I've tried two types of cables/adapters with the ATV2 and just get a black blank screen. No picture, no apple logo ... nothing.
The audio and Airplay work great using the optical connector. And when I connect the ATV2 to my daughters newer Bravia the video works great. But on the older Sony .... nothing.
I can't believe that this is a cable problem, but since that's the only component that I have the power to change out ... that's what i've been doing.
Any other suggestions? I'd prefer to not go out and have to buy a new TV or tuner to get a $99 box working !!!!

Apple Mini-DVI to DVI Adapter problem: no sound.

I couldn't find a more suited thread to discuss my issue so, this can be moved in deemed necessary. I recently purchased a DVI cable, seen below, but all I can get is the video to work. When I use the appropriate yellow cable for sound, the TV won't pick it up. It really seems like this is something that can't be fixed, but I figure it is worth asking about. Thanks.
http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore.woa/wo/StoreReentry. wo?productLearnMore=M9321G/B
Message was edited by: grant87

The yellow cable is likely not an audio cable, but an S-Video cable, useful for some projectors that don't have a VGA or DVI port, or many TVs which only support S-Video. If you want audio separate from the computer, most speaker systems at least support RCA Red/White left/right channel sound into the 1/8th inch audio port found on most Macs. Some Macs and sound software as outlined here offer additional channels for sound:
http://discussions.apple.com/thread.jspa?messageID=2458613&#2458613
I've never seen a yellow colored cable used for audio.

Mini Displayport DVI Adapter Problem

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