Previous 1 2 3 4 5 Next 97 Replies Latest reply: May 2, 2014 2:29 PM by Clovexs Go to original post
  • christos_gr Level 1 Level 1 (0 points)

    same here.


    macbook pro 13, i7, thunderbolt.

    External tv: Philips 32 tv connected through thunderbolt/hdmi is flickering, also screen turns negative-green then automatically returns to normal. Every more-less 15 mins.


    Must mention that Dell external monitor works absolutely perfect.

    I am already updated to the newest fixes through software update.


    hopefully we get soon a fix to this.

    greeky cheers

  • perttifromhelsinki Level 1 Level 1 (0 points)

    ***** here too !!!


    Brand new MBP 8,2 15" 2.3 Ghz Core i7 8Gt 1333 Mhz DDR3 APPLE SSD TS512C with 24" New Led Cinema Display.


    Flickering to Black!!!


    4000€ and I cant work with my setup!!!!!


    My 5th Mac Book Pro, maybe THE LAST ONE!


    Apple do something and FAST



  • jkirker Level 1 Level 1 (0 points)

    Wow perttifromhelsinki - you are having these issues with a MAC Cinema Display?  I thought it was with other monitors.


    Are you plugged into HDMI, VGA or DVI?



  • Allison Sheridan Level 1 Level 1 (10 points)

    Thats what makes this so irritating and curious - it's occurring with new machines with Thunderbolt plugged into an Apple Cinema Display via Display Port.  These same Cinema Displays work fine with a Display Port (non-thunderbolt) Mac.


    I've spoken twice to Apple support on this and on both occasions they acknowledged that there's a problem and told me to wait for a firmware update.  I called the second time because a month or two had passed, and we'd gotten a firmware update that said, "fixes display stability on Thunderbolt".  I wanted to make sure they realized this had not fixed the problem.  They confirmed the problem is still here.

  • arlo_j Level 1 Level 1 (0 points)

    Thanks for the update Allison.  It still happens to me daily (MBP i7, 24" apple LED).

  • perttifromhelsinki Level 1 Level 1 (0 points)



    It is The mini DVI from Apple :)


    Which worked fine with my old 13 inc MacBook Pro.



  • Allison Sheridan Level 1 Level 1 (10 points)

    I think it's actually mini-display port, not mini-DVI, at least on my 2008 24" Cinema Display.   I just double checked my facts with MacTracker.

  • jkirker Level 1 Level 1 (0 points)

    OK, so I broke down and got a mini-displayport to DVI adapter and new DVI cable and it's no longer doing it.  Just thought I'd put that out there to my frustrated bretheren. 

  • CharlesEslen Level 1 Level 1 (0 points)

    I believe I have discovered the solution to this, at least in my case.


    I was have the same screen flickering issues with my Sceptre 24".  After digging for a while I notice on areas of the screen with solid black (google solid black screen and look at that) there appeared to be a 'sparkling' of digital noise.  It was the first time I had noticed that and started looking around at my monitor settings.  Finally I found a setting called "Over Drive" in a misc setting area.  Apparently this is a setting on many monitors that allow the monitor to boost the voltage from the gpu to 'excite' the lcd and reduce ghosting.  Upon reducing the 'over drive' amount, it eliminated the digital noise in black areas as well as completely eliminated the screen flickering I have been experiencing with the thunderbolt port. 


    My hypothesis is that somehow the power output from the port doesnt play nice with the 'over drive' boost the monitor is using from the gpu.


    Anyway, as I said this completely eliminated the flicker for me and I hope it will do the same for you.


    -Charles Ford

  • swimmer37 Level 1 Level 1 (0 points)

    I'm another person having the blinking monitor problem. I have a new Macbook Pro 15" hooked up to a 2-year old 24" HP monitor. The monitor was working perfectly for the past 2 years with a different (old & crappy) computer. I called HP and a tech helped me figure out that it only happens when the monitor is set to high resolution; native is 1920x1200. I want to be able to edit my photos in high resolution.


    I took my new laptop back to the Apple store and the blinking thing happened with an Apple display in the store. They replaced the video card but the problem stayed. I was in the Apple Store a total of 4 times when they finally gave me a new laptop, but that still didn't solve the problem. Based on what I've read in other forums, lots of people are getting their monitors and computers replaced, but none of the companies have really solved the problem. This seems expensive for them!


    I'm still hoping someone will post a solution. I've tried everything posted so far. Here's a 1-minute video of my problem:


    Please help! This is super irritating!

  • MarkTuna Level 1 Level 1 (0 points)



    Are you saying that the problem went away with an upgrade to Lion? I am wondering if I should try that to fix it for me.




  • MikeDaley Level 1 Level 1 (0 points)

    Hi Mark


    Until the start of this week I would have said yep, Lion has fixed the problems, but, Monday I started to notice the screen blanks again. Not sure what kicked them off again as nothing has been updated etc. Middle of the week I also got a couple of split second corruptions to the bottom of the screen.


    Based on this it's still very much an issue, even on Lion



  • Daniel Palmer Level 1 Level 1 (20 points)

    Same issue here.  Had a 2009 MBP with mini display port, using Cinema Display 24" -- no problems.  Upgraded in March to 2011 MBP w/ thunderbolt, using exact same Cinema Display 24" -- screen flicker and the other weirdness issues.  Upgraded to Lion -- did not fix issue.  Still waiting for solution Apple!

  • ilyakashtelyan Level 1 Level 1 (0 points)

    The same issue applies not just to MacBooks, but also to new Mac Mini with thunderbolt port. The 24 inch LED cinema display will flicker on and off.

  • Allison Sheridan Level 1 Level 1 (10 points)

    Called Apple for the FOURTH time on this.  My little friend Chris at senior support said he's sending it to Engineering and will get me an answer in 24-48 hours.  I asked him what if the answer is, "yeah, that's a known issue, wait for a firmware update?"  he said he'd be real firm with them, he's on my side, he feels my pain.


    sigh.  I have no confidence this will change anything.

    I was super nice to the guy but I suggested he tell them that I was screaming and that I'm an internationally known Mac Podcaster and I was going to TWEET about it for cryin' out loud.


    yeah, that scared him.


    Allison Sheridan

    NosillaCast Podcast at

    A technology geek podcast with an EVER so slight Macintosh bias!

    Follow me at

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