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screen flicker using external ACD on new 15" MBP

25659 Views 91 Replies Latest reply: Aug 12, 2012 4:56 AM by odok RSS
  • rep1967 Level 1 Level 1 (0 points)
    Currently Being Moderated
    Sep 22, 2011 3:00 AM (in response to rep1967)

    Spoke too soon. Bad screen blackouts on first startup today. Next I unplugged display and re-connected it. Behaved well again for that session. So still causing problems albeit perhaps less frequently. Still awaiting the much promised "fix" from Apple. I'll give it until Lion 10.7.2 comes out. If no joy with that I'll camp in the store until they replace the display with something compatable.

  • Ivcha Calculating status...
    Currently Being Moderated
    Sep 22, 2011 3:05 AM (in response to rep1967)

    Yeah, I'm also experiencing this on MacBookPro early 2011 with external 24" display connected with MiniDisplayPort->HDMI.

     

    Wonder if the 3m extension cable does the trick as some users suggested...

  • jkirker Calculating status...
    Currently Being Moderated
    Sep 22, 2011 6:00 AM (in response to rep1967)

    Hey rep1967 - I'm with you - on my Dell 27 everything WAS fine and perfect after changing out by DualLink adapter and cable - but now, after the most recent Thunderbolt update I'm 70/30 in sleep mode after power-up or waking from sleep.

     

    Sometimes I even get to unplug everything and cycle the power on my monitor to get it to all come back...It's awesome and quite a feature enhancement.

     

    Expecially when I get to move everything around again to where things should be on the various screens.  Love that part of it too.

     

    I've given up on calling Apple tech support.

     

    As of late they have been completely useless in helping me with things - most recently telling me to format my hard drive and reinstall again to solve another issue.

     

    With Windows we just had to restart all the time with BSOD's.  With Mac's we get to format and reinstall...

     

    I still love my Mac though...  Perhaps I just try to make it do too much!

     

    John

  • rep1967 Level 1 Level 1 (0 points)
    Currently Being Moderated
    Sep 22, 2011 10:19 AM (in response to jkirker)

    Numerous people are having problems with the thunderbolt port when connected to non-thunderbolt displays - principally the Apple LED ones which worked fine with the non-thunderbolt Macs. Probably hundreds of calls made to Apple Support from the sound of it. Most are now being given the same reply: Apple are aware of it. Wait for a software update. Just feels to me that Apple are trying to hide this one under the carpet.

    What I would really like is for Apple to go on record and publicly state that they are aware of the issue, and to confirm that they are working on it. Just give us some information and reassurance and I'll live with it until they can put out a fix.

     

    Rob

     

    new thunderbolt mac mini 2011 with until now faultless 24" LED Cinema display. Annoyed by repeated 1s screen blackouts, and screen scramble.

  • christos_gr Level 1 Level 1 (0 points)
    Currently Being Moderated
    Sep 22, 2011 12:00 PM (in response to rep1967)

    ok, the update:

    Thunderbolt Software Update version 1.0

     

    fixed all the flickerings. Using 10.6.8 with macbook pro early 2011, i7.

     

    but now I cannot send sound through the thunderbolt-dvi-hdmi cable.

    fix one issue, create another issue.

     

    naughty naughty apple :-P

    :-)

  • jkirker Level 1 Level 1 (0 points)
    Currently Being Moderated
    Sep 22, 2011 2:09 PM (in response to christos_gr)

    Christos_GR

     

    First they made us blind.

     

    Now they make us deaf...

     

    What's next?  Dumb?

  • Leoparder Level 1 Level 1 (0 points)
    Currently Being Moderated
    Sep 25, 2011 12:51 AM (in response to jlsm51187)

    Hello all,

     

    I was looking for something for my problem and I see I am not the only one !

     

    I bought a MacBookPro8.3 17" 2.3Ghz i7 one month ago.

    When I plugged it into my newly bought HP 23" LED screen using the Minidisplay-port to DVI adaptater, I experienced black-outs everytime the GPU was heavily needed (Aperture, games, sometimes youtube, iTunes ...)

    It almost never appens if I do nothing, but sometimes, I click on the Aperture window or iTunes or I plya a game and then the external screen will go black (the macbook's too) for 2 seconds, then the Macbook's will come back on with the entire system on it (as if it reseted itself as onescreen-system. Then 2 seconds after this, everything black again and then both screen light up correctly back to a two-screen system.

     

    My thought ? *** for a 3000$ computer !

     

    Hope it will be fixed soon !

  • Lester GrimeNose Level 1 Level 1 (0 points)
    Currently Being Moderated
    Sep 25, 2011 2:51 PM (in response to jlsm51187)

    There seems to be a misconception that this issue manifests itself only when a MacBook or Mini is hooked up to a non-Thunderbolt external monitor. This isn't the case.

     

    I'm using a new 27" iMac. It's hooked up to a brand new 27" Thunderbolt display, which I had hoped to use to expand my overall desktop space. The Thunderbolt display flickers once every few minutes. The built-in iMac monitor is fine.

     

    The bottom line is that the 27" Thunderbolt display is completely useless. I'll be returning it for a full refund next week.

  • Allison Sheridan Level 1 Level 1 (5 points)

    That's really interesting Lester, and it destroys pretty much every pattern we've been able to find.  I think that tells us a little bit about why it's been taking so long for Apple to crack this.

     

    Here's an odd thing - I now have a new 27" display port Apple Cinema Display hooked to a new thunderbolt MacBook Pro, and it doesn't flicker. You have the newer thunderbolt display with a thunderbot Mac, and you do have flicker.

     

    go figure.

     

    Allison Sheridan

    NosillaCast Podcast at http://podfeet.com

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

    Follow me at http://twitter.com/podfeet

  • Lester GrimeNose Level 1 Level 1 (0 points)

    Yes, it's a very disappointing state of affairs. I made the switch from Windows to Apple about a month ago and for the most part I've been pleased. But I have to say that this issue is a real show stopper for me.

     

    Of particular concern is the fact is that I'm using all new, 100% Apple equipment: a new 27" iMac connected to a new 27" Thunderbolt display. The fact that this seemingly common combination of equipment was (apparently) never tested by Apple prior to release of the Thunderbolt display is stunning to me.

     

    You may want to follow the thread I started here:

     

    https://discussions.apple.com/thread/3344905

     

    You'll see that I exchanged the Thunderbolt display for a brand new one yesterday. The problem remains. I'm truly stunned.

  • Mike95 Level 1 Level 1 (40 points)

    Lester GrimeNose wrote:

     

    Yes, it's a very disappointing state of affairs. I made the switch from Windows to Apple about a month ago and for the most part I've been pleased. But I have to say that this issue is a real show stopper for me.

     

    Of particular concern is the fact is that I'm using all new, 100% Apple equipment: a new 27" iMac connected to a new 27" Thunderbolt display. The fact that this seemingly common combination of equipment was (apparently) never tested by Apple prior to release of the Thunderbolt display is stunning to me.

     

    You may want to follow the thread I started here:

     

    https://discussions.apple.com/thread/3344905

     

    You'll see that I exchanged the Thunderbolt display for a brand new one yesterday. The problem remains. I'm truly stunned.

     

    Another member who had your same situation resolved it by simply using the other thunderbolt port on the iMac.

  • Lester GrimeNose Level 1 Level 1 (0 points)
    Currently Being Moderated
    Sep 26, 2011 12:21 PM (in response to Mike95)

    That was one of the first things I tried. I was thinking it might just be a bad port. This approach didn't resolve the issue, however.

  • Mike95 Level 1 Level 1 (40 points)

    Out of curisotiy, try going to the dispaly section of System Preferences and simply re-arange the windows to force the displays to reset.  Also, another form member was able ot reset the thunderbolt by plugging in a TV with Mini displayport to HDMI adaptor.  I certainly agree you shouldn't have display issues with the two latest hardwares.

  • Lester GrimeNose Level 1 Level 1 (0 points)
    Currently Being Moderated
    Sep 26, 2011 4:15 PM (in response to Mike95)

    Hello, Mike. Thanks for the suggestions.

     

    I did try rearranging the windows to no avail.

     

    I haven't tried plugging the iMac into a television using a Thunderbolt->HDMI adapter. That would be a major logistical challenge due to the way my hardware is arranged, and even if it worked, it seems that restarting the iMac would be a simpler way to reset the Thunderbolt port.

     

    One thing I haven't tried yet is to insert a Thunderbolt extension cord in the path between the display and the iMac. If I can track down a cord, I'll give it a try and will let you know if it alleviates the flickering.

  • Ivcha Level 1 Level 1 (0 points)
    Currently Being Moderated
    Sep 28, 2011 4:41 AM (in response to jlsm51187)

    Hope I won't push my luck by saying this but it seems I solved it by simply changing my TB->HDMI adapter :S

    Bought one of these and I haven't seen it flicker since yesterday: http://www.amazon.co.uk/Dismaq-qCable-mini-Displayport-adapter-sound-transmissio n/dp/B003HLFEIC

     

    The hardware is MB Pro early 2011 i7 with external 24" Benq display

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