T520 Display Port to HDMI on Vizio M220VA provides intermittent blank screen

I have a Vizio M220VA tv to which I connect my T20 via the display Port. I never get a screen showing on the TV, but the laptop screen oscillates between a black/blank screen and the normal desktop. I have verified the T520 works when hooked to a different TV and that the TV works when hooked to a different laptop.
My graphics adapter shows as a " Intel HD Graphic Family.

Hi drussel,
Just a few questions to help us understand the situation better:
1. The other laptop you mentioned, is it also connected to the TV via displayport?
2. Are all your video/display drivers on the T520 the most up to date ones?
This may help others or myself in figuring out a possible solution.
Ed
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And here's info about my MacBook Air:
In the Amazon reviews, someone posted the following how-tos, which aren't working for me:
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3. Click on Displays
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Or you need to get an appropriate adaptor. The Griffin adaptor sold on Apple's Online Store will work with a standard HDMI cable.

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
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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.
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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!
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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.
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Mini-display port to hdmi cable not working consistently

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Hello David,
If you are having issues using your external display with your MacBook Pro, check the article below to continue your troubleshooting with resetting the SMC as well. Work your way down the article if you still are having issues after that.
Apple computers: Troubleshooting issues with video on internal or external displays
https://support.apple.com/en-us/HT201177
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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...
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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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Dear members,
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Before i use to just connect it and boom, screen would go off then on and it would also mirror on to my TV.
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Hi DjTimmyM,
Thanks for visiting Apple Support Communities.
Start with the steps below to troubleshoot issues with video out from your MacBook Pro:
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http://support.apple.com/kb/ht1573
Reset the system
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Best Regards,
Jeremy

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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.

I just ran a software update for Java and MacBook Pro SMC, now my Mini Display Port to HDMI TV is not working. The TV is flickering. The Mac Display is fine.

I was just watching / streaming TV off Safari on my actual TV.
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Software update popped-up and said there was an update for Java and for SMC.
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It won't work in Mirroring or set up as an extended display.
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I keep saying this over and over, in the hope that people who do a search will find it. Apple cannot possibly test for or be reponsible for the bazillion combinations of adapter, cables, and TV's out there. The only monitors that are 100% guaranteed to work with the MacBook Pro are the Cinema Displays and Thunderbolt Displays, because, they're made by Apple. They're expensive, but they work perfectly.
My guess is that you bought a cheap MDP to HDMI cable, or have a defective one. From my reading of these boards over the past few months, cheap cables have a high failure rate. And the regular priced ones have only a slightly less of one. Try a new one. Make sure you do not damage the Thunderbolt port.

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?

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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

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.

I am trying to connect my MacBook Pro to my TV with a mini display port to HDMI converter. Its not working. Any suggestions?

I am trying to connect my MacBook Pro to my TV with a mini display port to HDMI converter. Its not working. Any suggestions?

Depends on your model TV. Read your TV user manual. The newer models have "how to hookup" instructions for computer & games.
You can also do a forum search as well as a Google search.

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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?

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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.

HT201177 no audio when using a mini display port to HDMI cable to TV on my Macbook pro

no audio when using a mini display port to HDMI cable to TV on my Macbook pro. can only see the video

I keep saying this over and over, in the hope that people who do a search will find it. Apple cannot possibly test for or be reponsible for the bazillion combinations of adapter, cables, and TV's out there. The only monitors that are 100% guaranteed to work with the MacBook Pro are the Cinema Displays and Thunderbolt Displays, because, they're made by Apple. They're expensive, but they work perfectly.
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T520 Display Port to HDMI on Vizio M220VA provides intermittent blank screen

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