Previous 1 2 3 Next 176 Replies Latest reply: Jan 16, 2012 2:02 PM by Saul in PA
charles.m.h. Level 1 Level 1

Hello all,


I just got myself a new Mac Mini yesterday. I connected it to my existing 24" LED Display. Prior to this, my display was connected my MacBook (2009) and I have never had any problems. Since yesterday (connected to my Mac Mini), my LED goes black from time to time (0.1 s randomly). There are quite a few theories about why it does this. Since I have never had this problem before, it seems to me that it maybe something to do with the new Thunderbolt port (on MAC mini) which is used for the display as well.  In fact I have read an interesting article g_display_issues/


I suspect the same problem is happening with the new MAC mini.


I am keen to see if there will be a firmware fix from Apple, on either the MAC mini or the Display.



Mac mini, Mac OS X (10.7)
Solved by DallasGabe on Jul 28, 2011 5:02 PM Solved



I did a clean install.

Reply by DallasGabe on Aug 9, 2011 10:48 AM Helpful

The apple store also offers this adapter: opSellers


I have not tested if it works.

All replies

  • kram.rebrab Level 1 Level 1



    I'm getting the same issue - the screen will blank or flicker for a fraction of a second.  It happens about once a minute.  I have a 24 inch Cinema Display and a new 2011 i5 Mac Mini.


    I'm sure a fix will be along for this one.





  • pierregrenoble Level 1 Level 1



    I also have the same problem with my new Mac mini 2,5 GHz and my 24" Cinema LED display. It's ok during a moment (sometime several hours), and after that it begins to blink once every few minutes. At this time I also ear a fan noise during one or 2 seconds. I had this problem also with a MacBook Air, but it happend rather unfrequently (a few times a day). It seem that a lot of people have this problem and that Apple never did anything about it !




  • DEUCE SLUICE Level 1 Level 1

    Same here. Disappointing.

  • charles.m.h. Level 1 Level 1

    Guys, thanks a lot for your responses! On the positive, it's good that I am not the only who have this problem. On the negative, this is an issue, which I hope will be fixed by small Frimware update on the MAc Mini.

  • charles.m.h. Level 1 Level 1

    I have thought of something, if Apple does not fix this issue. It may sounds complicated, but bear with me.




    1. The LED 24" Apple Display has a Mini Displayport cable (Male) attached to it. It cannot be removed. At least not on my display.

    2. The new Mac mini has an HDMI (Female) port. I presume that there is no reason for the HDMI port not to work to display Video and carry Audio. It is HDMI after all.



    1. Attach a Mini Displayport Coupler (Female) to the Mini Displayport cable (Male).

    2. At the other end of the Mini Display Coupler, attached a Mini Displayport (Male) - HDMI (Male)

    3. Plus the HDMI (male) into the Mac Mini HDMI female Port.


    I found those products:


    Mini Displayport Coupler - € 9 l?utm_campaign=google-simple&utm_medium=product_search&utm_source=google-simple


    Mini Displayport (male) - HDMI (male) cable - £9 922


    I will wait for a few more days to see if there is any improvements, if not I will try this option.


    Let me know what you think of this idea?



  • DallasGabe Level 1 Level 1

    Same setup here, 2.5 i5 and LED 24". Exactly the same problem, took my mini to the apple store and they gave me a new one, but I still having the same flickering problem. I thought something was wrong with my display, it was driving me crazy!


    Thanks y'all for posting your problems, now I know I'm not crazy and I'm not alone in this.

    Apple please fix it now!!!!!


    Charles, that sounds doable but is not the best solution for hardware that is supposed to work out of the box, that was the reason why I bought a Mac in the first place.

  • tom andre Level 1 Level 1

    I have the same issue with my new mac mini. I have used the 24" led cinema with my macbook pro mid 2010 for almost a year without any problems, but hooked up with the mac mini i5 it goes flickering black. Sometimes very often, makes it useless...The strange thing is that it now happens when I hook up my macbook pro which worked fine prior to hooking up the mac mini...

    I was thinking about sending the display to service (2 months warranty left). But maby its better to wait for an software update? Please do something about this Apple!

  • charles.m.h. Level 1 Level 1



    My concerns is that the Thunderbolt port on the Mac Mini is a faster throughput, hence the current or voltage (i.e. power) needs adjustment via the a chip sitting on the Thundrbolt port. Maybe, and this is just a maybe, the Thuderbolt port is not correctly calibrated. This is just a theory. But if this is correct, then a Firmware should be able to fix this. The unknown is : does it damage the LED Display long term?


    Please Apple provide an explanation, or even better a fix for it?


    Do you guys know if we raise a Ticket to make them aware of this? Are they reading post from this forum?



  • DallasGabe Level 1 Level 1

    My 2 cents:


    I was going nuts and decided to do a full restore and start all over again. Booted the mini holding command+R and reinstalled Lion from the Internet.

    Now it seems to be working better, almost not flickering at all. I don't know if it is a hardware issue or it is Lion. Anyone else want to give it a try?

  • charles.m.h. Level 1 Level 1

    Very good point - it might be worth a try. Did you do a Lion re-install (keeping your files), or did you do a full clean install (i.e. wiping the drive, and then re-install) ?


    I will definitely try this this week end when I am back home! Actually I am 3 miles from Apple HQ, I should have gone and complain :-)



  • DallasGabe Level 1 Level 1



    I did a clean install.

  • charles.m.h. Level 1 Level 1



    I have re-installed Lion on my new iMAC. Rebooting, + cmd + R, and downloading the whole thing again.

    For the moment, my display works well, no more black flickering. Maybe the Lion version shipped on Mac mini has something missing.


    Thanks a lot for the tip!


    So far so good!



  • tom andre Level 1 Level 1

    Clean install did not work for me...

    I am going nuts...

  • charles.m.h. Level 1 Level 1

    Yeap, I confirm, it is back now! Even after the re--install!

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