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Ponponhead Level 1 Level 1 (0 points)
I have my aluminum Macbook perfectly wired up to my 32 inch RCA HDTV. Nothing will come up on the screen, I've tried detect display, I've tried restarting the computer, unplugging and plugging back in then detect display, turned the tv of and on, but nothing is working. I am currently running Snow Leopard, but when I was on Leopard this process of attaching the TV to the computer just took about 10 minutes of doing desultory processes that I've already described. Any suggestions on how to make it work the first time?

Early 2009 Aluminum Macbook, Mac OS X (10.6.1)
  • 1. Re: Mini display port to HDMI problem
    Benjamin Deming Level 1 Level 1 (0 points)
    Same computer, same OS, same problem, but with a Sanyo 32" using the Monoprice adapter.
  • 2. Re: Mini display port to HDMI problem
    JasonFear Level 5 Level 5 (4,935 points)
    Hi ponponhead,

    I'm beginning to see a trend here... you're at least the 10th person I've seen in the past few weeks with the Mini DisplayPort to HDMI adapter that can't get there's to work. Heck, I went through two trying to get my computer to work with my TV and didn't have any success. It wasn't until I went to a Mini DisplayPort to DVI (Apple-branded) and then DVI to HDMI that I got immediate success.

    The process, unfortunately, just "works" or it doesn't. It's one of the great features of the process and it's biggest point of failure. There aren't "settings" or tricks to get it to work outside of what you've already done and it should be automatic regardless.

    I'm beginning to think it has something to do with these adapters, but I know I've also read success stories too.
  • 3. Re: Mini display port to HDMI problem
    kklare Level 1 Level 1 (110 points)
    I see a mini-trend. These 32" sets and smaller are likely not 720 nor 1080 but like 768 and so are not "official" HD although they will work at these sizes. Since the set reports something back on the HDMI cable, there may be confusion and in any case it would be hard to get a desirable 1:1 pixel display. So we should be able to force 720 or 1080 or whatever the TV will accept, but can we?

    I've no problem with the mini-DVI to HDMI and my 1920x1080 large screen LED DLP.
    -Ken
  • 4. Re: Mini display port to HDMI problem
    Ponponhead Level 1 Level 1 (0 points)
    Hey all,

    I have found a process that works for me, I'm not sure if it will work for others, but if have the adapter plugged into the laptop and not into the HDMI cable, turn the tv on, then plug the HDMI into the adapter, it works most of the time.
  • 5. Re: Mini display port to HDMI problem
    JasonFear Level 5 Level 5 (4,935 points)
    Hi ponponhead,

    You indicated that it works "most" of the time. Quite frankly it should work, 100% of the time. What happens when it doesn't work, what do you do to get it to work properly?
  • 6. Re: Mini display port to HDMI problem
    Ponponhead Level 1 Level 1 (0 points)
    Well, when it doesn't work, the light blue blanket falls upon the laptop monitor, and then it goes back to the way it was, HDTV remaining blank.
  • 7. Re: Mini display port to HDMI problem
    andydude2 Level 1 Level 1 (0 points)
    Same problem. I'm using MacBook Pro with a Monoprice Mini-DP to HDMI. No matter which order I plug the cables in, the result is the same, bluescreen on the Mac for 1/2 a second, then the HDTV shuts off (Sylvania), and cycles 3 times (3 bluescreens and 3 TV resets), then stops, and the screen on the Mac returns to normal, and the screen on the TV stays black. It never shows up in the displays preferences.
  • 8. Re: Mini display port to HDMI problem
    HowardH Level 1 Level 1 (0 points)
    I'm having similiar problems with a macbook pro and recognizing a HDMI display connection via a monoprice mini-displayport to HDMI adapter. I have to unplug and reinsert the adapter to get the display to be recognized. It worked correctly under 10.5.6 but when I upgraded to 10.5.8, I started having problems. I may try the official adapter as you stated.
  • 9. Re: Mini display port to HDMI problem
    Tim Tjeerd Level 1 Level 1 (0 points)
    Same problem. Just cannot get it to work.
    Just got the monoprice mini display to HDMI (with USB sound) and it doesnt work. Frustrating.
    Sometime the red LED on the adapter lights up, but nog all the time. The TV states that there is no signal.
    Anybody got a solution?

    Message was edited by: Tim Tjeerd
  • 10. Re: Mini display port to HDMI problem
    Electro 303 Level 1 Level 1 (0 points)
    I got my mini-display port to HDMI cable from Hong Kong . Luckily I bought a mini-display port to DVI as well for my projector.
    My workaround just now just to run the mini-display port to DVi - my old DVi to HDMI cable into projector.
    The pure mini-display port to HDMI - HDMI to HDMI new cable link does not work unless I open my notebook and that is not feasible long-term as it under my LCD.

    I think Apple will just address this in the next few software updates as they don't officially support mini-display port to HDMI yet do they ? Or maybe they will expand their support to generic cables...hopefully

    Message was edited by: Electro 303
  • 11. Re: Mini display port to HDMI problem
    abhishek_m Level 1 Level 1 (0 points)
    I have a mini display to DVI connection bought from the apple store and a DVI to HDMI connecting to my TV. I cant get the TV to connect. The blue screen comes twice and nothing happens.
    My friend has a DVI connection on his older Macbook Pro. He can connect to the TV with no problems with the DVI to HDMI wire.

    I am going to the Apple store today to see if they can help.
  • 12. Re: Mini display port to HDMI problem
    PresumablyMe Level 1 Level 1 (0 points)
    I use the Monoprice miniDisplayPort+USB Audio>HDMI adapter plugged into a standard HDMI cable connected to an old Sanyo 30" widescreen CRT (yes it has an HDMI input!). Nothing displays on the TV's HDMI input UNTIL I plug in a second monitor. Mirroring seems to get turned on automatically at that point. Using the exteral monitor i set the Mac Mini's Display settings to 720P, 60Hz is default as is Overscan (yes, it cuts off about a third of the Menu and Dock). FYI, if I turn off Overscan, the Display Resolutiom resets to 420P. 1080i displays a chopped up and flickering desktop (unusable), and 1080P display's No Signal. Anyone know why a second monitor is required to get the TV to display an image?
  • 13. Re: Mini display port to HDMI problem
    PresumablyMe Level 1 Level 1 (0 points)
    More info. Hooking up my Mac Mini to a 37" Samsung LED TV using the Monoprice mini DisplayPort + USB Audio to HDMI Adapter works flawlessly. My uneducated guess is the Sanyo CRT TV needs to be fed via a mini DVI to HDMI Adapter combination as mentioned in another post. Otherwise, the Mac Mini simply won't display on my CRT TV via the mini DisplayPort Adapter unless or until I plug in a second monitor via a mini DVI to VGA Adapter.
  • 14. Re: Mini display port to HDMI problem
    tpmccomas Level 1 Level 1 (0 points)
    Just tried this last week with no success. I was trying to watch a game on ESPN360. I have the aluminum MacBook and I bought the mini-DisplayPort to DVI cable and HDMI to DVI cable from the Apple store. I did get the desktop picture on the TV but safari wouldn't work. Any thoughts?
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