Robert Farthing

Q: 27" Cinema display flickers when woken from sleep

I've noticed that my 27" Apple Cinema display flickers briefly when woken from sleep.

I have had the display for 8 months, and haven't noticed this before.

It flickers (or flashes), just once when the display wakes when the computer is woken from sleep. It only affects the bottom third of the display.

Once it has properly woken, and flickered once, it then works o.k.

Has anyone else had this?

Thanks.

Bob.

2010 Mac Pro 3.2GHz Quad Core, 27, Mac OS X (10.6.7)

Posted on Jun 27, 2011 12:53 AM

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Q: 27" Cinema display flickers when woken from sleep

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  • by Robert Farthing,

    Robert Farthing Robert Farthing Jul 24, 2011 8:54 AM in response to Robert Farthing
    Level 1 (65 points)
    Jul 24, 2011 8:54 AM in response to Robert Farthing

    Update:

    I've now been to the local Apple store, and tried their display Mac Pro/27" Cinema Display combo, and guess what.......the screen flickers on wake-up.

    I asked the guy in the store about it, and he says "oh yes, I see that. No-one has noticed that before, I wonder if mine does it at home".

    I tried the Mac Mini with 27" Cinema display, and the 27" iMacs, and they were o.k. (no flicker).

    So, this only affects Mac Pro's running 2560 x 1440 resolution.

    I've booked another call with Apple Support. No doubt they'll still tell me to take my computer in for testing, even though I've shown they all do it (the guy in the Apple shop suggested that, even though I demonstrated the flicker to him on the one in the shop).

    I wonder how long this will take to get a software fix? Problem is, the Pro is not mass-market (like Macbooks and iMacs), so it may take an awful long time.

    In the meantime, I'm sticking with 10.6.7.

     

    Bob.

  • by Robert Farthing,

    Robert Farthing Robert Farthing Jul 25, 2011 8:24 AM in response to Robert Farthing
    Level 1 (65 points)
    Jul 25, 2011 8:24 AM in response to Robert Farthing

    O.k., so I've spoken to Technical support, and sent them video's of the flicker on the Pro/Display in the Apple Store, and my own set up, and they asked for a copy of my System Profile.

    So, I now just have to sit and wait..........

    Really surprised that more people haven't spotted this on their own setups..........

     

    Bob.

  • by iamvic,

    iamvic iamvic Jul 25, 2011 9:43 AM in response to Robert Cramer1
    Level 1 (0 points)
    Jul 25, 2011 9:43 AM in response to Robert Cramer1

    I too am experiencing the flicker and static rgb noise right after startup.

  • by Robert Farthing,

    Robert Farthing Robert Farthing Aug 1, 2011 7:55 AM in response to iamvic
    Level 1 (65 points)
    Aug 1, 2011 7:55 AM in response to iamvic

    So, Technical Support have just rang me to say that they can't replicate the flicker, and that because it's only present at wakeup, basically I should just accept it.

    When I've just spent a small fortune on a computer, I expect it to be perfect. I don't expect the screen to look like it has a fault every time I use it.

    Unfortunately, because so few Mac Pro's are sold (compared to other Mac computers), I'm not going to get much traction with this unless every 2010 MacPro owner complains (and that's unlikely to happen).

    I'm not letting them close the case, and will try to video other MacPro's in other Apple Stores.

    Again, if anyone else has noticed this, please let me know........otherwise this will be a lonely battle.

    Also, if anyone has a 2010 MacPro that doesn't flicker, I'd like to know about that too......although that person is unlikely to be reading this thread.

     

    Bob.

  • by iSkid,

    iSkid iSkid Sep 6, 2011 2:57 AM in response to Robert Farthing
    Level 1 (5 points)
    Sep 6, 2011 2:57 AM in response to Robert Farthing

    Same iusse here. Tried to reinstall OSX Snow Leopard 10.6.4 and everithing was ok, no iusse, but if I update it to 10.6.8 after a wake up from sleep I see the flicker again in my Cinema Display 27 (and Mac Pro 2010 - Ati Radeon 5770). Same iusse upgrading to Lion 10.7.1..

  • by iSkid,Helpful

    iSkid iSkid Sep 6, 2011 5:55 AM in response to Robert Farthing
    Level 1 (5 points)
    Sep 6, 2011 5:55 AM in response to Robert Farthing

    Ok. I found a temporary solution. First, sorry for my bad English (not really mine, Google)

     

    I thought video drivers work fine up to Snow Leopard 10.6.7. From 10.6.8 iusse appears, so, why not try to use always 10.6.7 drivers? In /System/Library/Extensions are located some .kext files. I don't know exactly which drivers are to replace, I found here http://www.kexts.com/view/631-original_mac_osx_10.6.5_videokexts.html 10.6.5 original video drivers, with a mini installer

     

    All what I've done is copy and backup /System/Library/Extensions, install that drivers (selecting only ATI drivers), REPAIR PERMISSIONS and reboot.

     

    Now it seems to work fine, with no iusses in Lion 10.7.1

     

    What do you think?

  • by Robert Farthing,

    Robert Farthing Robert Farthing Sep 8, 2011 7:39 AM in response to iSkid
    Level 1 (65 points)
    Sep 8, 2011 7:39 AM in response to iSkid

    I'll give this a try and let you know how I get on.

    Thanks for letting me know that I'm not the only one.

    I've got on the "Apple seeding project", so will be able to feed back directly to the software engineers about this issue.

    Bob.

  • by satishmoney,

    satishmoney satishmoney Sep 9, 2011 12:17 PM in response to Robert Farthing
    Level 1 (0 points)
    Sep 9, 2011 12:17 PM in response to Robert Farthing

    Hi ,

    I bought a mac pro 2010(8 core)  by march and a 27 ' ACD.Yea , i have noticed similar issues with my setup as well.was searching Apple forums and finally got this thread.I was wondering none of the apple users noticing this problem.I Never allowed the case to be closed Ever since april .i had my mac pro replaced twice,even the monitor had so many issues.What happened to Apples quality control,a brand new LED display which came with scrathes and dust inside the glass.Got it replaced as well.Its been very frustrating ,Still waiting for my second replacement on my 27 ' LED display.Anyways ,i tired the same thing like yours ,went back to 10.6.4 ,not much of issues,when i update to 10.6.8 ,the flickering happens.Was however sure that it should be a software issue since the issue occured using other monitors as well.I am sure we are not few ,a lot of ppl dont find their way to this thread .Hope it reaches Apples ears soon.waiting for a fix.I have a huge log of videos and pics which clearly shows the issues.wish its fixed ASAP.U can also mail me if u find a solution or a fix.Hope we have a machine working fine soon as possible.satishmoney@gmail.com.

  • by Robert Farthing,

    Robert Farthing Robert Farthing Sep 9, 2011 12:45 PM in response to satishmoney
    Level 1 (65 points)
    Sep 9, 2011 12:45 PM in response to satishmoney

    Will do........

    Thanks for adding your name to the list.

    Bob.

  • by satishmoney,

    satishmoney satishmoney Sep 10, 2011 11:28 PM in response to Robert Farthing
    Level 1 (0 points)
    Sep 10, 2011 11:28 PM in response to Robert Farthing

    Hey bob.  I got a replacement mac pro Sometime back. It came with 10.6.4,out of the box when connected to the monitor showed the flickering, then the monitor went black for a moment and then straight to finder window . I forgot to mention this to you . looks like some serious issues with the OS :( .

  • by Jody Black,

    Jody Black Jody Black Sep 12, 2011 4:00 PM in response to Robert Farthing
    Level 1 (0 points)
    Sep 12, 2011 4:00 PM in response to Robert Farthing

    Same issue here, both brand new 2010 Mac Pro with ATI 5870 and a 27" LED Apple Display... flicker on wake... hopefully will be fixed in a later update.... if there ever is one... im still using 10.6.8.

  • by Dr Sly,

    Dr Sly Dr Sly Sep 12, 2011 4:15 PM in response to Jody Black
    Level 1 (145 points)
    Sep 12, 2011 4:15 PM in response to Jody Black

    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.

  • by Robert Farthing,

    Robert Farthing Robert Farthing Sep 12, 2011 10:49 PM in response to Jody Black
    Level 1 (65 points)
    Sep 12, 2011 10:49 PM in response to Jody Black

    Jody Black wrote:

     

    Same issue here, both brand new 2010 Mac Pro with ATI 5870 and a 27" LED Apple Display... flicker on wake... hopefully will be fixed in a later update.... if there ever is one... im still using 10.6.8.

     

    That's interesting that it also flickers with the ATI 5870 (standard is 5770). If you go back one release to 10.6.7, the flicker will stop.

    Bob.

  • by satishmoney,

    satishmoney satishmoney Sep 13, 2011 3:43 AM in response to Robert Farthing
    Level 1 (0 points)
    Sep 13, 2011 3:43 AM in response to Robert Farthing

    has anyone getting issues with applications ?I have got some specific issues with each application.Even apples softwares are creating issues .

    • Itunes when changing from one playlist to another ,Checked boxes appear on the itunes window.
    • skype ,when screen sharing ,the machine is slow and when used spaces and hot corners the other application windows slides jerky to reveal the finder.
    • Safari ,when viewing a large image from google ,when scrolled ,the images are torn and jerky
    • Zbrush ,creates polygon tearing when moving the objects in the 3D space
    • Photoshop creates wired pixels while reveling the image area hidden under tools in the window.

    Does all these direct us to design flaw with graphic card?

  • by Robert Farthing,

    Robert Farthing Robert Farthing Sep 13, 2011 6:09 AM in response to Robert Farthing
    Level 1 (65 points)
    Sep 13, 2011 6:09 AM in response to Robert Farthing

    Robert Farthing wrote:

     

    I'll give this a try and let you know how I get on.

    Thanks for letting me know that I'm not the only one.

    I've got on the "Apple seeding project", so will be able to feed back directly to the software engineers about this issue.

    Bob.

     

    Good news, people........10.7.2 fixes the flicker on wakeup problem. Woo-hoo

    Bob.

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