Mini display port problems

i plug in my cable it flashes but my tv says it has no signal and it was working fine last night any suggestions?

Hi there Ledd29,
You may find the troubleshooting steps in the article below helpful.
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
-Griff W. 

Similar Messages

  • HDMI to Mini Display Port problem.

    When I connect my MacBook Pro 13" (early 2011) to my TV using my HDMI to Mini Display Port adapter the MacBook just shuts off completely. I can use a VGA adapter no problem but I would like to get better picture quality from HDMI. Anybody have any ideas what the problem is?
    Thanks in advance.

    Have you tried a different adapter/cable? This is where I would start. (see if you can borrow some).
    You can also try these resets:
    NVRAM/PRAM:
    http://support.apple.com/kb/HT1379
    SMC:
    http://support.apple.com/kb/HT3964
    These are start points, gotta start somewhere, right?

  • 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.
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    So with that out of the way, here's what happens for me and most people in this thread:
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    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!

  • Problem with HDMI to mini display port

    I have been using the HDMI adapter to mini-display port successfully with my TV for months.  I have a late 2011 Macbook Pro.  My brother borrowed the cable to use with my mom's 2013 Macbook Pro retina display and now the adapter won't work.  He could not get it to work with her Macbook and had not realised that it had HDMI input so used that instead.  Now he returned the adpater to me and it does not work!  I am running software version OS X 10.9.2.  I read about a lot of problems similar but they seem to relate to 10.8.2 software.  Can anyone help or advise me why my adapter has given

    I have two adapters and both have stopped working after using them with the later (2013) Mac. I think it may have damaged them in some way!

  • 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.

  • Problem with mac pro 2x2.93 GHZ Dual Core and Mini Display Port

    Finally I see the button to create new post!
    I would like to explain a problem I have with my mac pro 2x2.93 GHZ Dual Core Intel Xeon processors and the ATI Radeon HD 4870.
    I have two 30 "Apple. After buying the new Mac Pro is one of the two monitors, only with the monitor all black, small horizontal lines.
    This happens only to the monitor connected to the mini display port... So if you reverse it monitors the problem always moves on the board connected to the Mini Display Port.
    Apple has already changed my video card and the adapter but the problem is still there.
    Someone can tell me if it is the ATI Radeon HD 4870 that has problems to have two monitors 30 "? Or it could be that the mini display port that is hard to read the two monitors and when the background is black (RGB-255-255-255) makes these lines?
    Through the Apple store I then bought a new card (EVGA GeForce GTX 285 "). Unfortunately, after three weeks of waiting is not yet arrived. Proof that I want to do before returning to telephone assistance is whether on a card that has two dual-link DVI ports normal all goes well.
    Sorry for the repetition of messages, but my English is very bad. This is the first time I connect to this site support
    Mario
    Message was edited by: marioart

    In any case, this system does not support two 30".
    I honestly don't think the 4870 with that adapter can support two 30". Just using the adapter itself would not give me the normal resolutions on my 30, where as the DVI port did. Luckily for me the adapter worked fine on my 20".
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    So I worked around my problem fine but I chose to get the 285 also. My question to you though is, did Apple make you pay for it? Was it part of a deal with them because the Radeon didn't work? You might want to talk to them about that. That is one expensive card.

  • Mini Display Port to HDMI sound problem

    I have an iMac 11, 2 (MacOS X, 10.6.8).  The Mini Display Port is supposed to be able to carry sound, (using a Monoprice Mini DisplayPort to HDMI Converter with Audio, and HDMI cord supporting 3D, and Audio Return.)  I am playing downloaded movies with VLC, which works fine on the computer.  When I try to burn DVD disc using Toast Titanium, I get video, but no sound.  So, I figure I can watch movies on my Vizio 42" TV screen with the MiniDisplayPort to HDMI cord.  I learned that to use the MiniDisplayPort I have to go to click the box for Mirror Display.  In System Preferences--- Sound---- Output Tab, the only two choices are:  Headphones...... Headphone Port, and E3D420VX....... HDMI, neither of which seem to help "push" sound through the MiniDisplayPort.
    So, I give up and watch the movie on the Vizio screen (through the HDMI cord), while listening to sound on the little computer speakers.  After watching a couple of movies, and then not doing anything for a few minutes, all of a sudden the movie starts replaying off the play list, and lo and behold..... sound coming through the TV speaker system!!!  (So, I know the HDMI cable is capable of carrying audio.) 
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    Hello,
    Long shot, but...
    Open Audio Midi Setup in Applications>Utilities, see the input & output options & KHz setting there, some things will change it for their own use, then not set it back.

  • Mini display port to HDMI - negative picture issue

    I bought a new Macbook Pro 13,3 inch laptop last week and added a 120 GB ssd and 8 GB of RAM. I'm loving it!
    Something I'm not loving however is the issue with the Mini Display Port / Thunderbolt when connecting with a MDP-HDMI adaptor. I watch a lot of movies and so hooking the computer up to my Sony BRAVIA 46 inch TV is quite important. Everytime I do the picture and sound are great! For about 5 minutes... then the picture goes "negative" you know that turqoise look?? Like a negative image. The sound is still there, the picture is just affected. To remedy I have to turn the tv off and restart the movie. Very annoying doing this ever 4-5 minutes!!
    Is there a fix of some sort? Apple should really release an update for this.
    Thanks!

    sounds more like a hardware failure.
    Try a different monitor to see if the problem persists, in which case that would point to a bad video card... or try a different source with your monitor(another computer), and if the problem persists, that would indicate a problem with the monitor

  • Mini display Port To HDMI not fully working with tv

    Ok So, I am using and 13" macbook Pro Alu (march 2009) and a 40" Samsung LED 120hz 1080p screen (Brand spankin New!). I am connecting the two between a dynex mini Display port adapter to HDMI out. Then have an HDMI cable Running from the adapter to the TV.
    My Problem:
    When i connect the two together The output to the TV doesn't Fit the whole Screen. There is about a 4 inch Gap on the sides that are just black and about an 1 1/2 inch gap on the top and bottom. This was how it was on my old tv and was hoping it would just work better on the new tv. The old tv was 720p 32 inch toshiba. but it is very frustrating because i use ableton and it defeats the purpose of having such a large display if it doesnt work properly. ive read a couple forums that were similar but non were the exact problem nor the right solution. I downloaded switchresX and it gives me higher resolutions to output but it does not change the gap. Im starting to think it may be a setting on the tv but i have yet to find anything that with fix it on either the settings on the TV nor the computer. please help thank you

    When you're in Extended desktop mode (not mirror), and you Open System Preferences > Display, there should be a preference on your main screen and one on the TV.  The one on the TV should have the underscan setting like this:

  • Mini display port to HDMI make my retina MacBook Pro have strong  static

    Hi god, every time I use my new Retina MacBook Pro only one weeks old using internal battery connect mini display port to HDMI to my Sony  LED TV my MacBook Pro will have will strong static all around the body! If I plug in the Mac adapter the static will be gone! It never happen to my old MacBook Pro 2011 early! Pls help...

    If it is the same adapter, then I would bring the MBP and the adapter to an Apple store for evaluation.  If not, the adapter may be the problem.
    Ciao.

  • MBP 15' 2011 Mini display port to LED monitor/TV resolution issue

    Hello,
    I have just bought  a Mini Display - VGA adaptor which I am plugging to a Samsung 23' LED monitor via a VGA/DVI adaptor. I manage to get a clone view but unfortunately, the maximum resolution offered is 1650x1050 when my Samsung LED monitor has resolution of 1920x1080. Therefore, part of the screen remains black.
    ... also, when I plug the Mini display port to VGA to my Philips 47' VGA port, I got a message that there must be a problem with the connection and again, maximum resolution offered if 1440x10..  and therefore 20% of my TV screen space remains black.
    At last, when I launch Windows7 via bootcamp, this is even wost : when I select the max resolution (1440x10..), the pictures remains freezed on my TV and I can't even move the mouse (while the mouse is moving on the MBP screen...). Only coming back to a very small resolution 800x600 or so will enable me to get control of the win7 desktop on my TV...
    Thank you in advance for your help
    Greg

    I have just bought  a Mini Display - VGA adaptor which I am plugging to a Samsung 23' LED monitor via a VGA/DVI adaptor. I manage to get a clone view but unfortunately, the maximum resolution offered is 1650x1050 when my Samsung LED monitor has resolution of 1920x1080. Therefore, part of the screen remains black.
    If you are using the monitor in Mirrored mode, its resolution setting will always be exactly the same as that of the built-in display. I presume you have the high-res 15" MBP display, with a native resolution of 1680 x 1050. If that's true, I suspect your monitor is indeed in Mirrored mode, and that's why you can't set the monitor to its native 1920 x 1080 resolution. If you press Command+F1 to toggle the mnitor into Extended Desktop mode, you'll be able to set its resolution independently of the built-in display. Or if you use only the external monitor, with the MBP display closed, you'll be able to set the monitor's resolution to whatever it supports.
    http://support.apple.com/kb/HT3131
    Stacking one video adapter on top of another is usually a recipe for trouble. It's always best to keep things as simple as possible. Use one adapter that gets you from mini-Displayport to whatever input you want to use on the TV or monitor.

  • How can I get a video signal using IMAC 27 with only mini display port. I like to send the signal wireless to a TV using a TV/audio transmit system.

    I have an IMAC 27 with a mini display port ( only this). I also have all the adapters ( mini display port to VGA, HDMI...).
    Since I moved to UAE I like to transmit the signal frm my IMAC ( where I also look German TV on) to my TV. I will do so by using a wireless Transmit receive system with theree cinch inputs ( transmit system ( video, 2x voice).
    The distance to the TV IS ABOUT 10m and one wall. I don`t want to use a cable.
    Is there any solution for example mini display to VGA + VGA adapter to cinch so I can use the transmit system?
    HDMI would also be an optiekn, bat then I have to by another Transmit receive system.
    If somebody made already the experience I would appreciate to share the information
    Is there may be any store in UAE where to get support. It is very diificult to get good advice here. They sell everything bat can not reaaly explain and have very often  no technical knowledge. With this problem nobody until now can help me.
    Hans
    <Email Edited by Host>

    I don't know what AppleTV can handle as far as bit rate is concerned, but increase the bit rate as high as it will let you. You are taking DV which is 25Mb/s and compressing it. If you're making an H.264, you should get great results needing no more than 6Mb/s. Bear in mind, the higher the bit rate, the larger the file size.

  • Why does my mini display port to hdmi adapter cut out intermittently?

    I have a MacBook Air 2012. Using a bestbuy mini display port to hdmi adapter connecting to a sony led tv.  The picture and sound transmits to the tv, but the signal would cut out after 10-15 seconds and it would last about 3-5 seconds and then the picture would come back again. 

    to me something happened similar to me but after removing the connector and put it back was solved, and now to use it with my TV I have to make sure both are well connected to both the Mac and plug the HDMI cable and adapter tv .
    I hope that solves your problems resolved as mine
    Blessings.
    a me me a pasado algo similar pero luego de sacar el conector y volverlo a poner se soluciono, y ahora para poder usarlo con mi TV tengo que asegurarme que esten bien conectados ambos tanto el conector al mac como el cable hdmi al tv y al adaptador.
    espero que eso resuelva tus problemas como resolvio los mios
    Bendiciones.

  • 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 on MBP (MacBookPro6,2) does not seem to work

    The Mini DIsplay Port on our office's new MBP (MacBookPro6,2) does not work with the office Toshiba projector, (several years old - 800x600 VGA) that I use for presentations. We have used a variety of MBPs with this projector over the years, they have always worked fine.
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    OK, I think I figured this one out. I have a utility installed called "gfxCardStatus v.1.8.1". This enables you to manually switch the active graphics cards between "Intel Only", "NVIDIA Only" or to allow the MBP to "Dynamically" switch the card. I had the card set manually to "Intel Only". On this setting, the projector did not sense a signal. Upon switching to "NVIDIA Only" the projector sensed a signal and worked just fine. I did not test the "Dynamic Switching".
    Message was edited by: Mac MD

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