Mini display port to DVI problems

Hello community,
I have a question regarding the connection from an iMac via the mini display port to a DVI input at a TFT monitor. I have an older TFT monitor and now I connected the iMac with this monitor via mini display port -> DVI adapter -> DVI cable -> monitor.
It is quite a simple connection, but actually when I force Mac OSX to detect external monitors it does not react at all. Mac OSX behaves as if there is no connection to an external monitor.
I already told this to my reseller and they told me that the adapter is not working correctly and they gave me another one. With that one I have exactly the same problem and now I'm quite sure, that it is not a problem of the adapter, but somehow my iMac does not find the external monitor.
Is there probably an underlying problem I do not understand yet?
By the way, my very old Macbook White has no problems detecting the monitor. If I use the older video output it works fine, but the new output at my iMac 21,5 inch does not work with my monitor.
My question is, why does it not work and what kind of monitor do I need, that it can be connected with my iMac (via DVI)?

Is the adapter plugged in all the way in the Mini DisplayPort? It takes more force than you might expect.

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I have a MacBook 5.1 and want to play movies from my computer onto my TV. I have a mini display port to DVI adapter but when I connect it to my TV nothing happens. What do I need to do?

Hi,
I have just connected my MacBook to my TV with a mini Display port to DVI Adapter which was connected ta HDMI to DVI Video Cable which I connected to my TV. I turned my TV on and my TV could not find any signal. I used the TV menu to connect to HDMI , but it said there was no signal. What do I do now?

try turning on the mirroring option and see if anything changes the following link will show you how to enable mirroring display setting
http://www.ehow.com/how_5661153_set-display-macbook-mirror.html

Mini display port to dvi or vga adaptor?

I currently use a MacBook Pro and want to use the mini display port to my 24 inch Samsung LCD screen. My question is should I use the mini display port to DVI or VGA? My Monitor has both ports on back. I know that DVI is Digital and suppose to be the superior source compared to VGA analog, but I have only used VGA when using my Monitor with my old PC and it seemed fine enough for me.
If, I do go the DVI digital route will it be that much better graphics compared to just using VGA?
Finally, has anyone hooked up a mini display port to either DVI or VGA adaptor into an LCD monitor? What are your thoughts, concerns, advice etc. I realize its a very easy thing to do, but seem tied up between using DVI or VGA port.
Thanks,
DH

Diffferences are not remarkable but DVI is indeed better. I wuold then choose DVI.

Mini display port to DVI not working

The mini display port of my late 2009 27" iMac is not working with DVI. Using the same monitor, DVI cable, and mini display to DVI adapter, I can connect my Air with no problems. So the monitor, adapter, and cable are fine. I can also connect my iMac to the same monitor using a VGA cable and a mini display to VGA adapter. So the problem clearly seems to be with my iMac. Has anyone had similar problems? Any advice? I think the image quality of DVI is substantially better than VGA so I really would like to get this working. But I don't think the difference is worth carrying my 27" monster into the Apple Store. I could buy a mini display to HDMI adapter, but I would rather not buy yet another adapter (I think I have about 15 already with my various idevices) - and it might not work either. The DVI setup is simple and really should be working. I bought a monitor and also a HD TV with DVI ports specifically for this. Thanks.

Hello,
Using the VGA connector, what resolution is set on the Monitor?
Is there any input choices on the Monitor for port or source?

Mini display port to HDMI problem...still happening, apple needs to help!

i read a lot about this topic and the question was marked answered, but there was no answer, sooo...
this is just a heads up to apple that this problem still exists and many people are still having it! Please do something... you put this mini display port on your computers... sold them to us... and now dont have software that lets it work... loosing a lil faith in apple today! there were 11 pages on this that i saw, i think it deserves a firmware update!
this next part is a direct copy of a post by sanktcolon and he explained the problem very well, so if your interested...
I figured I would just tell you all about my story. I do not have any solutions, the problem is still ongoing. But first I'd like to clear some confusion.
There seem to be a couple of people in this thread who thinks that when you experience this problem and you plug the HDTV with your MacBook through HDMI, you get a connection with the HDTV and can change the settings. This is not true. What happens is that the MacBook will flash its screen like it does when it detects a TV being connected, but then it will go back to normal. No connection established. Of course, there's people in this thread with different kinds of problems but with similarities. However, the main problem in this thread is quite clear and it's the same one that I have.
So with that out of the way, here's what happens for me and most people in this thread:
I've been using a Mini Display Port to HDMI adapter for quite a while and it has been working great. But lately I've been experiencing issues with it. There is nothing wrong with the adapter nor the cable, and certainly not the TV.
When I connect the adapter to the computer, the screen on the MacBook will flash blue, like it should, but it will not connect to the TV. What does this mean? It means that it detects the TV but is unable to establish a connection with it. Probably because it sends the wrong signals.
Now that's all pretty logical, but here comes the weird stuff. If I continue to try and re-establish a connection, either by plugging in and out the cable or changing HDMI-ports with the TV-remote (the MacBook re-detects when I switch from HDMI1 to HDMI2 and back), it will eventually establish a connection with the TV and work fine. Though, this can take minutes. Plenty of minutes. Last night I tried re-detecting for about 15 minutes and it didn't work. However, this morning it worked quite quickly.
So the problem is quite obviously with the MacBook/the OS and not with the adapter, cable or the TV. It's just ridiculous, and frankly quite annoying, to read posts where people claim you should get a new adapter. Why? Because there's so many people out there with different adapters, and people who have switched adapters and so on and so forth, that experience the exact problem I just describe. So either there's a problem with the MacBook/OS or there's a lot of TVs and adapters out there that are faulty. It's just illogical.
Once again I would like to remind you all that there's no connection, what so ever, between the TV and the MacBook when it doesn't establish one. And by establish I mean that you can actually see the screen on the TV. So bringing up the display settings won't do anything, search for devices on the TV or in the MacBook won't do anything. There just is not a TV there for the MacBook.
I have tried everything posted in this thread and the only thing that works for me is trying over, and over, and over, and over again until it just randomly works.

I too am having this same problem with my Macbook Air (Late 2010 Edition). I think this has something to do with OSX 10.6.6. Before the update, my mini display to HDMI was working flawlessly. Now, when I try to plug in to the TV my macbook just flashes the blue screen with no picture going to the TV what so ever. I'm not sure what was done with the update, but i'd sure like to be able to connect this machine to the TV again! APPLE, HEAR OUR VOICES! Fix this problem!

Mini Display Port to DVI Adapter

Hi guys,
I bought a MiniDisplayPort to DVI adapter @ Amazon to connect my Macbook (bought in 2009) with my Samsung 27" display. here's the link for the adapter:
http://www.amazon.de/HDGear-DisplayPort-Adapter-Stecker-Buchse/dp/B002CBMZSA/ref =sr_1_3?ie=UTF8&qid=1320868644&sr=8-3
and the link to the display: http://www.amazon.de/Samsung-SyncMaster-P2770HD-Reaktionszeit-TV-Tuner/dp/B002PW DEX6/ref=sr_1_1?ie=UTF8&qid=1320869130&sr=8-1
(The display works on my windows computer without any problems with FULL HD. So that means with 1920 x 1080. I've connected the pc with the display via a DVI cable too.)
But actually the problem is that when I connect my macbook with the dispay I can't choose full HD. I can only choose a lower rate. So my display has on the left and on the right side always a black bar! The screen is than more or less pixelated!
Do you think i would have the same problem with a original Apple adapter?
And no, I can't use a HDMI adapter
Guys please help me

Welcome to the Discussions!
Apparently, you bought the mini-DVI to DVI adapter, which was for the previous generation of MacBook and MacBook Pro computers. Return it and get the correct one.
bd

Is anyone else experiencing problems with the thunderbolt port on their Mac Mini's regarding using it to connect a second monitor? I've got the Mini Display Port to DVI-D adapter along with a DVI-D cable and I can't get an image on the second monitor.

I had an dual display image / setup working twice for a few seconds, but then it cut out. I think there may be a problem with the thunderbolt port.

As far as I can tell you have only listed that you have a DVI monitor connected to the Mini Displayport socket (i.e. the Thunderbolt socket) via presumably the Apple Mini Displayport to DVI adapter and a DVI to DVI cable.
You don't appear to have listed what the second monitor is and how it is connected (even though not working). As such I cannot tell what may be wrong.

Mini Display Port to DVI Resolution Not Working Properly Again

hink another EFI Update is in Order, Just used the Mini DisplayPort to DVI Adaptor to a NEC 3090WQxi Monitor and the Max Resolution is only 1600X1200, while my older (Late 2007) Macbook Pro needed an EFI/SMC update for Graphics before it detected the available resoltions for the same Monitor. Apple Support please fix this issue, or direct me in solving a very frustrating Problem
For anyone at Apple to Fix this annoying problem here are the Details.
Model Name: MacBook Pro
Model Identifier: MacBookPro5,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.8 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 6 MB
Memory: 4 GB
Bus Speed: 1.07 GHz
Boot ROM Version: MBP51.0073.B02
SMC Version: 1.33f6
Cheers,
Message was edited by: winxp
Message was edited by: winxp
Message was edited by: winxp
Message was edited by: winxp
Message was edited by: winxp

Hi DjTimmyM,
Thanks for visiting Apple Support Communities.
Start with the steps below to troubleshoot issues with video out from your MacBook Pro:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
Reset the system
You can reset the Mac's parameter RAM and SMC.
Best Regards,
Jeremy

Thunderbolt port to Mini Display Port to HDMI problem

Ok.. I figured it out (after reading another post of 44 pages of solutions/non-solutions and complaints starting back to 2009 and trying some) It seems as though a simple fix was missing.... I did this and it works just fine...
I have a 27' imac. I used the Thunderbolt port on the back to a MDP to a HDMI to my 55" Vizio HD 1080p TV. It didn't work until......
I called my Boeing engineer son-in-law (who is a very part time mac person (but very smart!) and he had me go to (SEE steps below!)........
I did this and it works just fine...
HERE IT IS STEP BY STEP!!!
1.Open SYSTEM PREFFERRENCES click DISPLAYS. A window opens that will say your mac on the top of the window (mine said- iMac).
2.Then....click ARRANGEMENT (there will be 2 little blue screens inside--1 portrait and 1 landscape view) and check MIRROR DISPLAYS.
3.Now a second window opens with the name of your other display (mine said- VZ55.....which is my TV) (the two little blue screens will now be overlapping).
4.Then go to DISPLAYS on same window and choose your RESOLUTION.
5.Now arrow pack on window to SYSTEM PREFFERRENCES
6.Click SOUND and click on whatever your other display is (mine was VZ55....).
7.Choose your resolution (mine was 1080p) and ****POOF**** there it was.... my computer on my TV!!!
WALLA!
I hope this will help a lot of you! Good Luck All!

Shoudl try deactivating "Automatic graphic switching" from "Energy" pane of system preferences ...
As said on the following : http://forums.macrumors.com/showthread.php?t=1297176

Mini display port to hdmi problem

Hi everyone, hope your day is going well.
I have a mid 2010 13 inch macbook pro. When I connect it to a hd tv with a mini displayport to hdmi adapter, my tv does not detect it. However, my macbook's screen turns blue even though the tv does not show up in the display or sound categories in system preferences. Is my adapter broken or could my mini displayport not be functioning correctly? My tv and the hdmi cord I'm using works with my xbox and windows laptop so they are both functional.
I would appreciate any help, thanks.

Could be a bad adapter. Can you check it out on somebody elses macbook pro?

Mini Display port DVI adapter not working on Thunderbolt Port

For some time I've been using a mini display port to DVI adapter on an slightly older MBP to connect to my HD TV. I recently purchased a MBP with a Thunderbolt port and when I try to connect it to my TV via my mini-display-port-DVI adapter things are not working properly. The MBP is seeing the Philips TV but it isn't listing all the display modes and I'm not able to send any video to it. Does the Thunderbolt port require a new display port to DVI adapter?

Let me be clearer; I've got the MDP-DVI adapter connected to a cable that is DVI on one end and HDMI on the other. I've got both laptops so I can compare side by side. I plug in the MDP-DVI adapter to the old laptop and all works well; I plug it into the new laptop and while the laptop does see the TV, the display modes for it are all 1080p which is wrong I don't see any desktop image on the TV unlike when I plug it into the older laptop. This is very disappointing as I expect things to just work with Apple products.

Mini Display Port to VGA adapter + Monitor Eizo s2231W = CRASH

I purchased a new macbook pro last month with 2 adapters, one for VGA the other for DVI. I'm having some trouble with the Mini-DVI to VGA adapter. The Mini Display Port to DVI adapter works well.
When I attach the VGA adapter to the monitor it works well for a couple of minutes, then I dont know why my MBP crashes and I can see a purple or white screen. The crash is really a crash... cauz I cant do anything. My mac is frozen and the only way to resuscitate him is to keep pressed the power button for a while till it turns off, and then turn it on again.
You can say... why do you need the VGA if the DVI works...
the problem is that I'm probably supposed to use it one day attached to a projector because of a presentation at university.
So I dont wanna see my new macbook pro freezing in front of my professor.
please help.
EDIT:
adding some precious information
My hardware configuration as regard the graphic chipset is
NVIDIA GeForce 320M
The resolution of the external monitor is 1620x1080
I'M NOT using the mirroring ( but the desktop extension)

I had the exact same problem. It actually escalated from there and it would crash at the startup screen (the white one with the apple and the spinning gear). The only way I was able to fix this was to reformat the entire computer. I was lucky enough to have backed up all my data when it first started crashing. I've only reformatted yesterday and things seem fine for now. I don't know what caused it, or how to fix the problem any other way.

Mini display port to RCA TV

Hokay, SO
I just had a very frustrating weekend. It ended with a broken TV and a cut hand, but we won't go into that at the moment.
I bought a Mini display port to DVI cable, as well as a DVI to Video cable both from the mac store. This was so that I could use an RCA cable to connect it to my tv which is a few years old. However, it seems to me that the Mini displayport to DVI cable and the DVI to Video cable aren't even really compatable. There seem to be prongs or pins or whatever coming form the one that the other doesn't even have a slot for. So needless to say, it didn't work.
WHAT can I do to watch movies from my brand new macbook 13" on my old tv using video cables!?!?!?!

There are 3 kinds of DVI plugs: DVI-A (Analog only), DVI-D (Digital only), and DVI-I (Integrated, Digital and Analog signal). If there are no pins above the blade, it is DVI-D, which usually has compatibility problems with certain analog-only peripherals. If it does have the pins, it is either DVI-A or DVI-I, which means that it does have an analog signal. Since RCA cables use an analog signal, the DVI to RCA adapter must use DVI-A I'd imagine. I'm guessing that the MiniDP to DVI adapter uses DVI-D. I don't know why apple would do that, since they have a MiniDP to VGA adapter which uses an analog signal, so MiniDP must be able to send an analog signal (unless the VGA adapter has some converter to convert digital signals to analog). Hope that wasn't too confusing.

Are the mini display ports the same size on the macbook 2010 as the macbook pro?

i am trying to hook up my macbook to my hdtv ive found some cables on ebay but there all for macbook pro? will it fit the macbook ?also i think im going to have a problem with the sound any ideas any1 ? there is an input and out put option on sound prefrences no option for mini display sound output ? maybe i need to buy the cable first and when i plug it in it will give me that option?

Your MacBook has the Mini Display port. MacBook Pro's after 2009 have same. Earlier MacBook Pro have the full size DVI port.
If the cable is full size DVI you would need a Mini Display Port to DVI adaptor

Mini display port to composite?

I'm a video DJ and have gotten tired of lugging around 2 DVJs, 2 mixers, and a case of DVDs to my gigs, so I decided to get a MacBook and join the ranks of the laptop DJs. I'm really starting to regret that decision. After dropping almost 3 grand on a MacBook, Virtual DJ software, and a midi player, I discovered that the only way to play video out of the MacBook is by the mini display port. No problem, I found an adaptor (http://www.amazon.com/gp/product/B004VV8R86/ref=cm_cr_rev_prod_img) and it'll work fine. Couldn't be more wrong. While that adaptor worked (and I've tried a variety of configurations also that worked to equal quality - Mini Display to VGA to RCA, Mini Display to HDMI to RCA with a variety of brands and converters) the picture quality is fuzzy, washed out and movement in the video is jerky to the point of being distracting.
I understand the whole conversion from mini display to composite is not the easiest thing. I've done a ton of research and reading about how the whole process works ( http://www.epanorama.net/circuits/vga2tv/vga_to_tv_techniques.html is an excellent article explaining a lot of it) but this just *****. Does anyone know a way I can get a good picture? Most clubs (I've actually never seen one here in the US or in Europe) don't use HDMI cables to hook up their TVs, I've always had to run composite, and if this doesn't work I'm looking at going back to my old equipment and selling the MacBook - which is not what I want to do!

As long as the clubs you're working in persist using antiquated analog TVs, you aren't ging to be able to make them display high-quality images.

Mini display port to DVI problems

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