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  • afsos Level 1 Level 1

    I've found my solution, don't connect to the monitor using HDMI, seems like a retrograde step, I thought HDMI was supposed to be 'the best', that certainly is NOT my experience.


    So, what has worked for me is to carry on using the mini display to female HDMI cable BUT then connect using an HDMI to DVI cable and use the DVI connection at the monitor end; all seems well now!!!

  • frederic1943 Level 6 Level 6

    HDMI is a badly designed interface developed for the purpose of controlling content not a superior signal. Since control could not be done with analog connections, HDMI was a new digital alternative to allow whoever wanted to control the content with HDCP.

    Problems with HDMI are not usually with the cable but is in the HDCP copy-protection protocol. There was a technical paper from the HDCP group pointing out that some developers of switches are making incorrect assumptions about the way to handle HDMI/HDCP standards.

    HDMI is being pushed because of the copy protection. High-bandwidth Digital Content Protection (HDCP) is a form of Digital Rights Management (DRM) developed by Intel Corporation to control digital audio and video content as it travels across Digital Visual Interface (DVI) or High-Definition Multimedia Interface (HDMI) connections. The specification is proprietary, and creating an implementation of HDCP requires a license.


    HDCP is licensed by Digital Content Protection, a subsidiary of Intel. In addition to paying fees, licensees agree to limit the capabilities of their products. For example, high-definition digital video content must be restricted to DVD quality on non-HDCP compliant video outputs when requested by the source. DVD-Audio content is restricted to DAT quality on non-HDCP digital audio outputs (analog audio outputs have no quality limits). Licensees cannot allow their devices to make copies of content, and must design their products in ways that effectively frustrate attempts to defeat the content protection requirements

  • Kerry Sanders Level 1 Level 1

    I was so frustrated until I read dmjgkart's post. I could not watched purchased HD content from iTunes on my 47" Vizio television until I followed these steps. Now it works perfectly.

  • mac_con Level 1 Level 1

    I'm having trouble with the kanex XD vs2. with my mid 2012 macbookpro connecting with a male HDMI cable to my HD Vizio. Im able to connect for like, 5 min, then i get a maroon/red screen on the mac and a blue screen on the TV. what's going on? is there a way to fix it? or am i doing something wrong. the audio/display looks great when it works.

  • gregorri Level 1 Level 1

    I had the same issue: I was directed to the following apple forum:


    The summation of the resolution is that only certain mini display to hdmi that conform to the VESA DisplayPort Dual-Mode Standard.


    - I had the moshi, and it was listed as a supported device but they have removed it from the list because it does not meet the standard.

    - The iWires Mini DisplayPort to HDMI Adapter no longer available either.


    The only supported one for our brand of Macbook pros is the

    Griffin Mini DisplayPort to HDMI with Audio + DVI      

    It can be bought at the following website or in the store: h-audio-dvi


    This article affects the following versions of mac book pros.


    • MacBook Pro (Retina, 13-inch, Late 2012 and later) 1
    • MacBook Pro (Retina, 15-inch, Early 2013)
    • MacBook Pro (Retina, Mid 2012)1
    • Mac mini (Mid 2010 and later)1
    • Mac Pro (Mid 2010)
    • MacBook (Mid  2010 and later)
    • MacBook Pro (Mid 2010 and later)
    • MacBook Air (Late 2010 and later)
    • iMac (Late 2009 and later)


    Hope this helps.

  • perdew Level 1 Level 1

    Wow there certainly is a lot of info here. Forgive me if there is a solution already and I didn't find it in the 50 pages of comments.


    I purchased a cheap Sanoxy MDP female adapter from amazon. I am going from my macbook pro (2011) to a 32" lcd tv.


    It initially worked for me with no problems. The only issues I had was figuring out how to switch the audio back to the computer when i was done.


    Now I cannot get the display to work at all. It only worked for a few days. I had to have the tv on and then connect evertyhing to the computer and the screens would go blue and then it would be fine.


    Now I get nothing. Detect devices isn't finding anything. I tried to follow all of the different orders and procedures previously suggested in this thread to no avail.


    Any help would be greatly appreciated!

  • mileup Level 1 Level 1

    question... i dont quite know how to use this blog.... that said.
    2010 MAC air   mini port to hdmi in 2nd screan (LG TV) does not work.  get the blue screan indicating reconition of something being pluged into the mini port but not reaction on the tv.

    Did a shutdown restart and got the same result although it did give the option to mirrior and did not work... should i just go back to VGA stule conector and give up on HDMI?

  • Sturmegist Level 1 Level 1

    A potential solution to the external display not receiving signal problem is unplug the HDMI cable from either end while both computer and monitor are on, then shut down the computer and unplug the power cord. Reconnect the HDMI cable then the power cord, start up the computer and the external display should work. Throughout the whole process the external display should remain on. People who also have Windows installed through Boot Camp may try getting it to work in Windows first. Once it did, boot back in OS X and it should work too.


    To prevent the same issue in the future, choose the resolution that's below the highest supported mode. Use 1080i instead of 1080p or 720p instead of 1080i for example. The Refresh Rate doesn't seem to matter however.


    Hope this helps.

  • Bkm423 Level 1 Level 1

    I have a MacBook and for the second time trying to connect a belkin hdmi USB adapter to my TV it doesn't recognize it. I also have verizon fios cable box and once I connect the hdmi to computer the cable box ends up not working. Anyone else with this issue?

  • Lacqua8888 Level 1 Level 1

    I pressumed this would not work, but in desperation, when no cable would work I went ahead and tried it any way and sure enough it did the trick!

    Using iMac 7,2 lg26le5300 and snow leopard.  Thanks for sharing your creative fix.  Still blown away you must have 2 sets of wires to trick the iMac into communicating with an external display...

  • DennisEriick Level 1 Level 1

    I had same problems--

    Fixed it by turning on mirroring(Displays--arrangement) & then detect displays & then choose 720i

  • HG Level 1 Level 1

    I am having similar problems, my cable is plugged into my computer and TV, it goes blue as though it is going to work and but then nothing happens. I go into my System preferences and go to Displays and it doesn't show that the cable is there? Even though the screen went blue like it was registering it?

    Cable worked not that long ago? Is this a MAC software problem? Cos I can't find anything that works Someone PLEASE help me. or MAC please correct the software cos it worked perfectly before.

    Cable is fine and a MAC one, so isn't the hardware.



  • DennisEriick Level 1 Level 1

    Did you "detect the display"?

  • Csound1 Level 8 Level 8

    HG wrote:


    I am having similar problems, my cable is plugged into my computer and TV, it goes blue as though it is going to work and but then nothing happens. I go into my System preferences and go to Displays and it doesn't show that the cable is there? Even though the screen went blue like it was registering it?

    Blue screen generally means No Signal, not Display Detected.

  • defmuse Level 1 Level 1

    Holy bells, that actually worked (leaving the adapter plugged into the laptop, turning on the tv, and then plugging the HDMI cable from the tv to the apapter in the laptop). I didn't expect it to work, but it did.


    Thank you Ponponhead!

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