Previous 1 4 5 6 7 8 Next 176 Replies Latest reply: Jan 16, 2012 2:02 PM by Saul in PA Go to original post
  • rep1967 Level 1 (0 points)

    I put in a 3 meter length mini display extension cable yesterday between my 24" ACD and the TB port on my new mac mini and had a day without screen flicker/blackouts. Keeping my fingers crossed. Early days. Will report back after a few more days.



  • rep1967 Level 1 (0 points)

    Spoke too soon. Multiple screen blackouts on startup today. Had to unplug and then re-connect the display to get it to behave. The curse of new technology still there. Come on apple, give us a fix for this.

  • javier155 Level 1 (5 points)

    My new Mac Mini Server seems to work fine. The other day I got one flicker and at two instances I have seen two blackouts but at all times that has occurred when using Citrix and I think it is unimportant. Still thing the AMD configuration seems to be the main problem. Stollo knocking on wood though.

  • rep1967 Level 1 (0 points)

    Strangely enough, for the past few days, having put in a 3m mini display extension cable between my 24" apple LED cinema display and my new thunderbolt mac mini, the screen problems have all but disappeared. I think just 1 brief blackout in a week, as opposed to getting repeated 1-2 second blackouts multiple times per day. As things are now, I can live with this. Would suggest anyone with this problem gives this solution a try. Can get the cables from apple, eBay or amazon.



  • spunky_lausanne Level 1 (0 points)

    Hi all, there is a brand new iodate for the ACD24. This seems to fix the problem.

    <edited by host>


    Tell if it works for you too.

  • spunky_lausanne Level 1 (0 points)

    '' new update ''

  • pirloui Level 1 (0 points)

    Great, thanks for the news.

    My monitor is at work, so no testing for the moment, but will update asap.

    Strange enough this update don't show up when I search the Apple support page..

  • Saul in PA Level 2 (295 points)

    Just installed.  Screen shaking when starting.  Blacked out two times during the update (rebooting?).  Now stable.  Since it sometimes goes away for a few hours will have to wait and see if it is a full fix.


    Thanks for the link!

  • SRINATHSADDA Level 1 (120 points)

    It's even worst with new 27" Thunderbolt display!

  • Jason W-D Level 1 (20 points)

    I get the feeling you people would take a random drug if someone on the street gave it to you- because that is what you just did with your monitors.


    @meraTechStuff - it even says 24" on the URL and the dmg! [I think you mean worse]


    Unless there is an official Apple update page be very weary about updating firmware. A little bird told me that these firmware updates are specific to particular series of monitors.

  • charles.m.h. Level 1 (0 points)



    I have downloaded and apply the fix to my ACD 24". No flickering so far, but time will tell as it is very random by nature.


    Out of curisioty, where the page describing the update? The link only provide the link to the download, not the description of the fix?





  • spunky_lausanne Level 1 (0 points)

    Hello all,


    I got this update from Apple's 2nd level support. I have an open ticket since quite a while and called them probably 10 times in 2 months. This afternoon I received a phone call from them telling me that the problem was still under investigation but no solution was found yet. A few hours later I received a mail with the link I've posted previously. (attached mail in french....)


    I have to say that so far I had absolutely no flickering. I use to have flickering for around 5 minutes at start up or when resuming from sleeping mode.


    Hope this will work for more people.


    My config:

    Mac mini i7 2.7 GHz

    8 Gb RAM

    AMD Radeon HD 6630M 256 MB

    ACD24 2009


    <edited by host>

  • charles.m.h. Level 1 (0 points)

    Thank you very much for sharing this! I have been speaking to two senior advisors from Ireland for the past 2 months, and no resolution!


    Merci beaucoup,



  • spunky_lausanne Level 1 (0 points)

    Glad it seems to work for you too !

  • missilemike Level 1 (0 points)

    My monitor freaked out imediately after the firmware fix was applied.  But after a reboot and cycle of the monitor, the flickering is 100% gone.  The fix works fantastic for me.

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