Mini display port to HDMI problem

Do you have the displays mirrored? If you can see two sets of resolutions (one for your screen and one for your monitor) then you are communicating properly. Does the external give an error such as "out of range" or "no signal"? It could be a resolution setting...remember, you only have to change the resolution for the external. Still, I would check in Displays for two things: 1, be sure to check the box that says "Show displays in menu bar" and, 2, be sure to mirror displays.

Come on I work in the IT field. Yes, I have changed to every resolution with/without mirrored display. Monitor just goes to sleep. I don't use mirror display in 10.6.5 and it works great even in all different resolutions.

As do I (work in the IT field)...but sometimes the obvious answer is the overlooked answer, so I was pointing out the obvious. (not that one has to have the mirror displays option checked). Another obvious, and possibly needless thought, you have verified with multiple cables? Also, have you attempted multiple externals? Have you proven that your MDP works by using a MDP to VGA connection? (yes, that has a different range, but it proves MDP functionality) And, if all of those fails, we can always do at last what we should have done at first...we can pray about it!!! 🙂

Not 100% sure this will work for anyone but did for me it kept going blue and not showing up, so i went to prefrences then displays and clicked detect displays nothing came up so i clicked the colour tab and recalibrated my mac screen went back to the main display tab and clicked detect displays and bam it worked. not sure how or why it just did. hope it helps

Hello all, here is a new but related set of circumstances, I have a 13 inch MBP 2011, Mini DisplayPort to HDMI cable and LG 27 inch monitor. When connected and woken from sleep on one occasion the screen did not receive a signal, a restart fixed this and it has not happened since.

What I have noticed is a series of lines on the desktop wallpaper after I minimise a window, almost as if the edge of the window has burnt the screen but it follows the pattern of the app minimising. To clarify, it is as if an outline of what has been opened is maintained on the desktop wallpaper. I have hooked up an identical MBP to test my graphics card is not faulty and it did exactly the same thing, guessing it is a refresh issue but could not find anyone else with the same issue so thought it might be worth posting.

Does anyone have any ideas what could be causing this?

My guess is that your graphics card needs to switch...I would try this and see if manually switching your graphics works to remove the lines.

MacBook Pro 2.33 Ghz (intel core 2 duo), 4 GB, 15"

MacBook Pro 2.4 Ghz (intel core 2 duo), 4GB, 13"

iPod Touch (3rd Generation) 64GB

Sorry about that...completely missed the "13"...so, as you have noted, the 13" MBP does not have the dual graphics...

Is it the external display leaving the lines, or the MBP display? If external, what kind of display is it--a lcd, led, or plasma? If it's a plasma...static burn in happens quite frequently, and rather quickly, in the first 100 hours of use.

I did something pretty close by changing the color and try to detect and after about 3 minutes of messing around with it it started working. You would think Apple would fix this problem but I guess their to busy making money in other areas.

Ok so i just spent way to long figuring this out, i have a 24" apple cinema display and a unibody 13" macbook 2008. The port wouldn't recognize the display.

The only this that worked was unpluging the monitor(power) and pluging it back it, somehow that managed to reset the port.

10.6.7 on MBPro 13" Mid 2010 -> Samsung UE32C4000

Hope this helps someone.

My problem turned out to be that the mini displayport to HDMI adaptor failed which the local Apple store replaced under warranty (part No. APRCN10330 www.apr_products.com). I tried absolutely everything else to resolve the problem including erasing HD and resetting to factory settings before getting the adaptor checked, as it was new I just thought it was unlikely to be faulty.

The guy at the apple store did say that he had come accross this before. So its worth getting this checked.

I now have a problem with my macbook pro mdp to hdmi.

It was working fine on my 32" T.V up until a week ago, when it started failing. The Mac now flashes off 3 times, and never connects to the TV (screen remains blue).

This morning i received another mdp to HDMI, this one does nothing at all. I have tried on 2 T.V's with 3 Different HDMI leads. which are 1.8 metres (one is the one ive always used).

Any help on this would be much appreciated

Thanks.

Hey guys,

I have a problem as you got I got Samsung SyncMaster SA350H 24" LED monitor and I could not get the out untill doing what Ponponhead said. I was able to use the monitor via VGA but HDMI did not work and now I can get the picture with HDMI. Thank you Ponponhead.

I`m desperate due to this problema.

I was eagerly awaiting for 10.6.8 hoping that it would solve my problem but it did nothing.

My external display stopped working after 10.6.6 and i`ve tried many things.

Now, i just bought 3 new adapters (vga, dvi and a new hdmi) hoping that it can solve.

So, Apple will just not answer us ? What can we do?

weird... so i had this problem and searched up this thread while trying to get it to work. i decided to move so i unplugged the power for a sec and tried it again and it worked. idk if its related but just thought i'd put it out there.

http://http://tablettechtoday.com/blogposts/apple-android-tablet-producers-face- hdmi-mini-port-problem.htmlThis is what happens when you dont follow specifications. I mean if you are going to put something in to the device you are creating follow the specifications. Android and other tablets are being hit with this problem as well.