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.

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I have a Samsung HD TV and I purchased a Mini Display port to HDMI Adapter today. For some strange reason I get no display on my HD tv. I even tried switching a few HDMI cables and nothing popped up. I made sure my computer was updated. Help pls

I have a Samsung HD TV and I purchased a Mini Display port to HDMI Adapter today. For some strange reason I get no display on my HD tv. I even tried switching a few HDMI cables and nothing popped up. I made sure my computer performed all software updates, and I even tried calling Apple Support. They just told me to keep trying different hdmi cables and see if anything pops up. Does anybody know what the problem is? My HDMI cable is from "rocketfish" also my display port is too.

You may have the screen refresh rate set higher than the TV is generally able to track reliably. It may be able to get there most times, but occasionally loses sync because it is out of its nominal range.
I suggest you sit down with the manual for the TV and find out what resolutions at what refresh rates it intends to support through VGA, and make sure your screen settings are near (or below) those limits.

Mini display port to HDMI adapter not working

I can not get my MacBook OS X to dispaly on my new Samsung LED TV. I have a mini display port to HDMI adapter (two years old) conneted with an HDMI cable (new) into the HDMI input on the TV. I tried both inputs, tried resetting the TV, plugging, unplugging, restarting, checked all my system preferences...I can not figure it out. I took my cables to a local store, tested the HDMI cable, and it works. Tested the adapter and they had the same problem I have on my Mac. The screen will flash blue when you plug it in, but will not show up in the TV. I think the adapter must be bad, nothing else makes sense???

Hi Kater24,
Apple doesn't make a Mini DisplayPort to HDMI adapter, so the one you've got there is a 3rd party one that's designed to work with the Mini DisplayPort on your Apple computer. The adapter is pretty much plug-n-play, there's no configuration necessary. Plug it into the machine, the HDMI cable from the other end of the adapter into your TV, select the HDMI input on your TV and fire up the computer.
If that's not working it's possibly an issue with the adapter and/or cable to the TV. Any chance you might have access to another TV for troubleshooting purposes?

Im having trouble connecting my macbookpro to the tv. im using a mini display port to hdmi adapter, when i switch tv/video to hdmi on the tv nothing pops up, and i dont have the arrangement tap on the display settings, please help!

im having trouble connecting my macbookpro to the tv. im using a mini display port to hdmi adapter, when i switch tv/video to hdmi on the tv nothing pops up, and i dont have the arrangement tap on the display settings, please help!

I've found that the order of operations, so-to-speak, can be important when hooking up mini display port to HDMI. I have the most success with the following operations in this order:
1) Plug HDMI cable into mini displayport adapter (the cable should not be plugged into either the TV or the computer at this point)
2) Plug the mini displayport end of your new super-cable to the computer.
3) Plug the HDMI end into your TV.
4) Switch inputs on your TV to the proper input.
5) If still nothing on the TV, try a different HDMI port on your TV.
Hopefully this helps! Good luck.

Why does iTunes not display hdcp content on my second monitor? The adapter monitor and cable have HDCP Support. This also occurs with a rocketfish mini display port to hdmi adapter.

It works for a time and then fails.
ITunes 11.04.
iMac Purchased Early 2013.

Seems to work when I swapped dapaters from theb 3.0 adapter to the mini display port adapter. THis is the same thing that got it worling the first time byt in reverse.
Had already tried clearing the PRAM. If it occurs again, I will have to try redetecting displays next time. Judging by what I saw reading through these forums it will happen again,

Will the rocketfish mini display port to hdmi adapter work with a mid 2012 macbook pro?

I want to buy it but im not sure if it will work.

I think your Macbook came with a Mini DVI port instead of a Mini Display port.

Mini display port to HDMI adapter

imac osx Tiger 10.4.11: I attached Mini-DVI to DVI cable to DVI-D to HDMI cable to Sony Brava HDMIl TV. To use TV as monitor. The only picture is my Desktp/screensaver MINUS the Dock. I tried applications ie. calendar, textEdit; iPhoto, but nothing appears on the TV. What else do I need to do ot use the TV as my computer screen?

The only picture is my Desktp/screensaver MINUS the Dock.
Then it is working just as they designed it!
The second screen is part of an Extended Desktop, connected to your existing screen along one edge. You can inspect and change which edge in the Arrange pane of displays Prefs. The "main" screen is the one with the tiny Icon of a MenuBar.
The mouse moves freely from the main screen, across the boundary, and onto the other screen. When you are ready to use it, drag a window across to the other screen.

I have a macbook 13"screen purchased in 2007; I want to hook it up to my HDTV; I purchased a mini display port to hdmi adaptor but it does not fit. what kind of adaptor will work for this model?

I have a Macbook, 13" screen, purchased in 2007. I want to hook it up to my HDTV; I purchased a mini display port to hdmi adapter but it does not fit. Any suggestions?

If you connect yourMacBook using a MiniDVI/HDMI adapter you will need to use external speakers for audio since the pre-2010 MacBooks will only send video through the MiniDVI or MiniDisplay Port . The MiniDVI/HDMI doesn't carry audio and there's no audio plugs on the TV to work with HDMI since it's expecting audio with the HDMI.
If your TV has a DVI input plug you can use a MiniDisplayPort/DVI adapter. Then a DVI cable to the DVI input plug on the TV. The TV will have RCA audio plugs for use with the DVI. Plus DVI gives a sharper image than HDMI.

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!

I have a MacAir, mid 2011 model, and want to view video on my TV. I see that I need a mini display port to Hdmi but there are many of these. What exatly do I need and how does one view a movie downloaded to the MacAir on a TV screen?

I have a MacAir, mid 2011 model, and want to view video on my TV. I see that I need a mini display port to Hdmi but there are many of these. What exatly do I need and how does one go about viewing a movie downloaded to the MacAir on a TV screen?

Welcome to Apple Support Communities
That's exactly what you need. A Mini DisplayPort to HDMI adapter and a HDMI cable. See > http://support.apple.com/kb/HT4241?viewlocale=en_US
This is the only way to view a video on the TV. After connecting your MacBook Air to the TV, image on your TV should show immediately. Then, press Command and F1 keys to mirror your MacBook Air display, and open the video

IMac does not recognize external monitor using Mini Display Port to HDMI

Hello,
I have been trying to get an external monitor (HDTV) set up for use with my iMac using a Mini Display Port to HDMI cable I just got. However, when I connect it to my iMac's mini display port, the imac's screen goes black for about a second, then returns, but it does not detect the external display. The other display is just showing a "no signal" message on the screen.
I have restarted, reset PRAM, connected and disconnected the cable several times, tried changing the resolution on the imac, plugged in/out the other display, and clicked the "detect displays" button using the option key in display preferences, but nothing has worked.
I am using an early 2009 iMac running Mavericks.
I've been using the AirParrot app, but it's horrible for video and a little slow.
Can anyone please help sort the issue here? I feel like ive exhausted everything that I know to do.
Thanks.

I am having the same issue. Hope Apple can fix this soon!!!

I am trying to connect mbp to tv using mini display port and HDMI cable TVtuned tocorrect port as shows Mac wallpaper (purple star scene) but does not show what is on MBP. What can I try so that I can see mbp display on TV?

What do I needto do to connect a tv as an external display for my mbp using a mini display port to hdmi cable. I have tried display without success. tv is receiving a signal as displays apples default wallpaper when connected but nothing from screen of mbp.

Soundls like it is working. Try dragging a window on the MBP to the edge of the screen and see if it appears on the TV.
There are two ways to set up the TV one is to mirror the MBP display and the other is to be an extension of the MBP's screen.
You change the settings in System Preference->Display

Imac 14.2 mini display port to HDMI TV - Mavericks - does not detect display?

Hi,
I have a new Imac 14.2 with thunderbolt port. I have connected a mini display port to HDMI cable. connected this to a TV. But in preferences>display, no external device is connected. TV is turned on. I have restarted the iMac. Any ideas?
thx

Hi w andersen,
Thanks for visiting Apple Support Communities.
If your TV is not recognized by your iMac when you connect it, I recommend the troubleshooting tips found in this article:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
Start with these steps:
Confirm display adapters are fully seated in their respective connections and that they are supported models and for the computer and display. Refer to these articles to assist you with adapter compatibility and further configuration information:
Monitor and Display Adapter Table
About Mini DisplayPort to HDMI adapters
Apple Mini DisplayPort adapters: Frequently asked questions (FAQ)
Thunderbolt ports and displays: Frequently asked questions (FAQ)
Reset the system
You can reset the Mac's parameter RAM and SMC.
Best,
Jeremy

Help using a mini display port to HDMI cable with MacBook Air and TV

Hi, Apple gurus. I need help setting up my MacBook Air to my Vizio TV using a mini display port to HDMI cable that I just purchased on Amazon.
And here's info about my MacBook Air:
In the Amazon reviews, someone posted the following how-tos, which aren't working for me:
1. Plug in both ends, mini display port on your macbook and the HDMI on any available port on your LCD.
2. Go to upper left Apple menu and scroll down to system preference. Or use your FINDER from the dock, go to applications, then system preference.
3. Click on Displays
4. Click on DETECT DISPLAY
5. A similar screen pops up with name of your LCD, mine says SONY LCD, click on ARRANGEMENT
6. Click the box that says MIRROR DISPLAYS.
7. Go back into system preferences and go to SOUNDS which is located under HARDWARE.
8. Click on OUTPUT, then select HDMI, which should be listed next to your LCD name.
I ran into trouble at step #4. My MacBook Air doesn't list the option of "detecting display." I do, however, have the box mentioned in step #6, "Show mirroring options in the menu bar when available."
Regarding step #8, HDMI didn't appear in the list — I only see "internal speakers."
So, what am I doing wrong? Or, did I buy the wrong cable?
Thanks in advance for your help!

Or you need to get an appropriate adaptor. The Griffin adaptor sold on Apple's Online Store will work with a standard HDMI cable.

Mini display port to HDMI...help

I have all my options selected and was just about ready to click purchase on a new 2010 17" MBP and thought I would double check one more thing...Mini display port to HDMI with audio.
I see many post about this, but most seem to be on 08 models...have the new ones changed? I am more less getting this for my wife to use and she needs it for presentations. I finally got her to go from PC to my old 17" G4 laptop and it's time for an upgrade. The one issue we run into is that files are commonly sent as Power Point, but we got through that with a Mac/Microsoft upgrade.
I am told the location that these presentations are displayed, plans to get a new monitor and they are looking at BestBuy and such for TV style monitors with the HDMI option. This seems like a cheap way to get away from the projector system they have now that only supports S-video or VGA. I'm hoping that Apple now supplies audio thru the HDMI cable which is in my (limited) understanding the main reason the change over from DVI to HDMI was implemented in the first place.
If the no audio issue is still a factor, maybe I should put off the new MBP, because I am trying to get away from having to make the trip with her, in order to make sure we have both audio/video. With the projector system they now run, I have to take a PA and output the audio from the headphone jack and then run the S-video to the projector. I am hoping the new MBP will have one cable connection and she be on her way!
M

Well for starters, anyone who puts audio into a PPT presentation needs to be taken out back, beaten, drawn and quartered, beaten again, put in a stockade, flogged, then beaten one final time for good measure. The only audio coming from a presentation should be the presenter speaking. The PPT slides are meant to be secondary in nature, highlighting the major points of the presentation as you go along, not be the presentation. Audio and video, even those stupid transition effects, just distract from the content. The people at Microsoft responsible for putting those features into PowerPoint, and thus opening the floodgates for all their competitors, should have all the above happen to them, and then add being shot to the very end of it. It's still far too good a fate for the **** those people have loosed unto the world.
That being said, I'm under no illusion that this is going to do anything but get worse over time, so here's the deal.
You need a MDP to HDMI adapter that is designed to also carry the audio signal. But it couldn't hurt to teach her how to ensure that the audio output device is set properly. Just in case. Or, you could do the right thing, and start smacking the people who think it's cute to put all these animations and sound effects into presentations. There are a very select few times when that sort of thing is justified, and 99.99999999999999999999999999999% of the time when one is used, it's not one of those times. Then you wouldn't really have to worry about getting audio AND video. Might be rather cathartic too.

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

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