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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

Top-ranking reply

Robert Farthing Author

Level 1

69 points

Posted on Jun 27, 2011 11:37 AM

O.k., so I'll just give an update here in case anyone else suffers the same problem sometime.

I tried the 27" Cinema Display on my MacBook Pro, and there was no flickering.

........so it wasn't the display..........

I reset the PRAM and SMC, no change.

I removed and re-seated the graphics card, no change.

I re-loaded Snow Leopard from the original discs, and the flickering stopped.

I updated all the software (re-loading from discs reverts to an earlier software version), and everything is still o.k.

Problem solved!

Must have been a glitch in the software somewhere, and a reload of the OSX got rid of it.

Relief!

Bob.

View in context

35 replies

Sep 16, 2011 8:24 AM in response to satishmoney

satishmoney wrote:

Hi , i have recieved a replacement for my 27' LED cinema display jusdt now.Unboxed it and found a line (like a scratch) running inside the glass of the monitor.However ,when i put it on there was a yellow tinge on the bottom of the screen.I have a emailed the logistic team of apple about it.I wanted to your comments about it.Really fed up with apple now 😟. this is the third monitor that they replaced n found issues with.

Thanks a lot.

satishmoney

I feel your pain, I really do.

All I can say, is keep replacing until you get one that's perfect.

It makes you wonder how much this costs Apple, then ultimately the customer.

Surely it must be cheaper to have a decent quality control, and get it right first time?

Bob.

Sep 16, 2011 8:40 PM in response to Robert Farthing

Thanks for your reply.I have mailed apple logistic team (ARCHIEMEDES BALANCE -south asia) last night ,well there was no reply yet.I rang up customer care in India and found that ,these customer relations executives dont work on weekends,so got to wait untill monday 😟.Anyways ,i want to ask you ,how can take a log of the yellow tinge on the screen for this display.I really do want to know.Please help ,apple might want to have a proof about the issue ,which will facilitate the replacement.I am not able to capture the line running inside the glass on the monitor .Please help me .

totally agree with you ,wonder what happened to apple 's quality control and reliability😮.I just dont want to give up n let apple go away with this.

Thanks a lot for your support n replies .

satishmoney.k

Sep 16, 2011 11:34 PM in response to satishmoney

I doubt if "Grab" screen capture will show up the yellow tinge on the screen (but you could try it), so photographing the screen may be your only option.

Bob.

Sep 17, 2011 11:21 AM in response to Robert Farthing

Yea ,u were right ,grab didn workout .The capture was clean.I took a snap and checked it with photoshop ,it showed grey with yellow tinge.Is this enough proof for apple ?any suggestions ?I am still trying to capture the line running inside the panel ,still no success.😟

Umbo

Level 1

4 points

Sep 22, 2011 7:26 AM in response to Robert Farthing

I am running 10.6.8, on a Mac Pro 1.1, using a Samsung 2232GW monitor. I noticed it several updates ago, but not sure which one. I usually use my MacBook Pro and access my Mac Pro 1.1 through screen sharing, WHERE THE BLINKING DOES NOT SHOW UP! The longer the Mac Pro stays in sleep the more blnking before it stabilizes. IT DOES NOT HAPPEN IF I USE THE SAFE BOOT MODE, THEREFORE IT MUST BE ONE OF MY NON-APPLE APPLICATIONS THAT IS CAUSING THE PROBLEM. Now in the process of isolating it, but very busy. Likely will make an image of my current system and do a clean install of Lion when it stabilizes, adding back my non-apple applications one by one. Groan!

27" Cinema display flickers when woken from sleep