Previous 1 4 5 6 7 8 Next 197 Replies Latest reply: Apr 1, 2016 8:27 AM by leon-geyer Go to original post Branched to a new discussion.
  • tommytboner Level 1 Level 1

    Sounds promising... but what about an update for us Non-Lion users?? It sure is annoying

  • Dr Sly Level 1 Level 1

    Has anyone installed the new EFI firmware version 2.1 for the MBA with Thunderbolt in conjunction with the ACD 24" and/or 27" yet?


    I was wondering if that fixes the issue. As soon as I get home, I'll try that.

  • Krag Level 2 Level 2

    If it's a MacBook Pro it may have a defective logic board. My external 226BW was acting up and eventually went blank. The Store tested my mid-2009 MBP with an Apple Display and it failed there too. I have Apple Care, it didn't cost me $458.

  • Heronymo Level 1 Level 1

    I just installed the Thunderbolt EFI Update that was released today (September 14 2011) on my 2011 MacBook Pro and guess what? Yes, it's still flickering! I'm using a 40 inch Samsung HDTV, model LN40B550 if anyone's interested in knowing.


    This is crazy! I'm going to call Apple this week again.

  • MacUser122 Level 1 Level 1

    I installed the firmware update yesterday and the new Thunderbolt software update today.  I am using a 2011 MacBook Pro and a 2008-09 Cinema Display.  No flickering since the software update . . .

  • stevenj7 Level 1 Level 1

    I've also installed the firmware update and now the Thunderbolt update today.  I've rebooted 3 times and still no flickering...  This may be the fix.

  • Heronymo Level 1 Level 1

    I just installed the Thunderbolt Software Updated released today (September 15th 2011) and so far the flicker seems to have been fixed! This is awesome. I'm going to continue to use my Samsung HDTV tomorrow and see if it truly is fixed. I really hope it is.


    I just noticed an interesting feature. I'm not sure if this is Lion specific or if the unibody MacBook Pros have been doing this for a while, but when the computer is on and has another display connected while the internal display is active, closing the laptop lid simply turns off the internal display. My 2006 MBP would go to sleep if I did that so I'd have to click the mouse to wake it up again for clamshell mode. And the internal display turns back on when you open the lid. Pretty cool.

  • Aimee Giese Level 1 Level 1

    I installed the Thunderbird update with high hopes - half hour in massive flicker and kept on flickering till it blacked out completely. So **** disappointed.

  • MacUser122 Level 1 Level 1

    . . . not fixed.  Flickering continues. 

  • almejia16 Level 1 Level 1

    Still flickering. With all the Engineers Apple has, they can't seem to fix this problem.Fix it once and for all Apple. How many more updates till you get it right?

  • Menlo Park Matt Level 1 Level 1

    I installed the Thunderbolt update yesterday and my right 24 inch Apple LED went crazy.  More flicker and digital artifacting then ever before.  However my left 24 inch Apple LED was rock solid. 


    So I tried performing the resolution trick I read that restting the res had some effect.  No luck.


    So I tried swapping the arrangement of the screens in Preferences. Moved right to left, left to right.  Then put them all back in the right configuration.


    So far, no flicker! 10 min strong so far!  Perhaps this isn't a real hardware issue!


    Perhaps this bug has something to do with the Arrangement in Display Preferences


    Try moving around your display arrangement preferences and see what happens.  Any better?  Same? Worse?

  • tritoon Level 1 Level 1

    Updated to the latest updates in Lion but still no luck to solv the problem, i have DELL 30'' TFT U3011.

  • Krag Level 2 Level 2

    Using 22" with 2011 Mac Mini... worked fine for 3 flickering every startup for longer periods. Used monitor for a year with MBP 2009 Snow Leopard with NO issues.


    Obviously a Lion problem, we'll just have to wait for Apple  to fix it. If EVERYONE with a flicker called Apple support me thinks they'd get on it sooner than later.

  • christos_gr Level 1 Level 1

    still flickering for me too.


    for the record, I am using macbook pro 13' i7 and the external tv is Philips 32pfl 5604h/12.

    It's really annoying, all these flickering-stuff...

  • tomas_c Level 1 Level 1

    Flickers for me also!

    Just bought a new iMac 21,5" to use with my Apple LED Cinema Display 24".

    Apple is soo slow with updates..


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