Currently Being ModeratedMar 19, 2012 7:56 AM (in response to luuuke)
Do any of you have more than 8GB of RAM installed? I've gone through monumental hoops with Apple Support to determine that that was the problem. Backing down to 8GB or under solved the flicker. That, and if you have a secondary display hooked up that can contribute to the problem.
Currently Being ModeratedMar 19, 2012 8:21 AM (in response to orchetect)
I have two 24 Cinema displays and 12gb RAM. I'm hoping Apple release an update before I need to actually open it up.
Can't remember the particular OS version, but this has happened before - then the next update solved it.
Just wish I hadn't 'upgraded' to Lion before this bug was fixed. If Lion is to blame.
As before, it's only one display affected - not the 'main' one.
...the one that the firmware upgrade requires be disconnected; coincidence perhaps.
Currently Being ModeratedMar 19, 2012 8:27 AM (in response to orchetect)
I have a late 2011 MBP with 8gb all from and installed by Apple out of the box. I have one external 24-inch ACD that I never had any problems with (even with prior MBs) prior to 10.7.3.
Here is a bug link:
Currently Being ModeratedMar 23, 2012 4:34 PM (in response to andrew_smith)
Screen flashes to black intermittently and sometimes locks up showing multiple images of what was on the screen. Early 2012 MBP with 8 gigs ram. Have LED 24 inch screen no trouble with my MBP late 2008 both running Lion.On 10,3.7
Currently Being ModeratedMar 29, 2012 11:11 AM (in response to yohode)
I have a late 2008 Macbook pro, and connected used, warranteed 24" A1267 cinema display. It works fine except the screen occasionally goes black for a second, then recovers. Also, my display runs a bit hot.
My MBP and this monitor were made to work together, they are the same "vintage". Connected w mini display port. I have read hundreds of posts on dozens of sites, no one has the answer yet.
Apple firmware update applies onlt to newer MBP's with Thunderbolt , so it wont launch on my computer.
This is killing me- I hae 15 days to keep it and live with it or send it back for another, and hope the problem is random, not common with all these monitors.
Currently Being ModeratedMar 29, 2012 11:35 AM (in response to kaydee5)
That is how my Cinema display behaved on my MacPro of that vintage. I hooked the display to a Thunderbolt MBP and did the firmware update to the display, plugged it into the Mac Pro, and it has been good ever since. The problem started happening for me after an OS update, so I suspect it is really a compatibility thing. I understand how irritating it must be for you.
Currently Being ModeratedMar 31, 2012 1:14 AM (in response to Richhep)
Gosh, I've experienced this problem as well. Sometimes it occurs while im typing in Word 2011. I'm so used to it that even while I'm typing and the screen goes blank I simply continue to type since it still accepts the keyboard input while I'm typing away.
I also have problems with Finder becoming unresponsive and freezes kb/trackpad input but that's for another thread =(
Mac OS X 10.7.3
April 2010 MBP 15' hi-res anti-glare
8GB RAM; Intel SSD
Currently Being ModeratedApr 6, 2012 10:09 AM (in response to Richhep)
This Cinema Display Update fixed it for me
LED Cinema Display (24-inch, Late 2008): Intermittent flicker while connected to a Thunderbolt port
Currently Being ModeratedApr 15, 2012 12:39 PM (in response to Richhep)
Configuration: I have a Mac Pro with 6GB RAM, the ATI Radeon HD 5870 graphics card, one Apple Cinema Display (27-in), and two 19-inch Dell monitors. My Apple display is hooked up via the Display Port. One Dell is hooked up via the "Mini-Display Port to Dual-Link DVI Adapter," and the other Dell is hooked up via direct connect Dual-Link DVI port. OS is 10.7.3. Power is stable. Room temperature is within specs and the air curculates well (I have an in-room fan to ensure good circulation.
Issue: I have had this set-up for over a year now and never had any issues - until today. I haven't performed any upgrades to software for weeks now. This "blackout" suddenly started today and it is only the Apple monitor - the Dells don't black out. It blacks out for about a second, then comes back on. It does this at a frequency of a couple of minutes to as infrequent as 30-45 minutes apart.
Actions Taken: I've read the prior posts (browsed them). I am under 8GB (I have 6 GB installed). My graphics card is on high performance mode. It can't be a configuration issue as this has worked for over a year now. I read about the Thunderbolt issue, but that was with the 24-inch (and I don't use Thunderbolt).
Any other ideas?
Currently Being ModeratedApr 15, 2012 2:00 PM (in response to Sanjac)
Do the USB and firewire ports stop working? If they do, It might be the power supply.
You might want to have the power brick checked out. If the power brick gets too hot, the unit will shut off.
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