Mac mini 2012 and Apple LED Cinema Display 27"

FearGhost · Feb 11, 2013, 01:54 PM

Hi, I recently upgraded my 2011 Mac mini to a 2012 Mac mini Server. I was using my Apple LED Cinema Display 27" with the 2011 model with no problems at all. But now, using the server, I find that the screen flashes bright white for a split second when waking from sleep. The image quickly returns to normal and is fine after that. Has anyone else seen this? I've tried resetting the Pram but it made no difference. Any other suggestions on what to try to stop this happening? Thanks.

FearGhost · Feb 12, 2013, 10:37 AM

No one? I guess I better take the mac mini back to the Apple Store to get it checked

SVTmaniac · Feb 12, 2013, 10:44 AM

Mine with a 27" TBD does not do it. But I'm not sure it's something I'd take it back for even if it did.

FearGhost · Feb 12, 2013, 10:50 AM

Thanks for the response. What worries me is it's more like a camera flash going off every time the ACD comes on! And its definitely the Mac mini 2012 because I have re-connected the 2011 Mac mini and its fine. I called into the Apple Store today and their Mac mini 2012 doesn't do it connected to their Thunderbolt display......

rbrian · Feb 12, 2013, 12:59 PM

I suspect it has more to do with the OS than the hardware - I say that because the exact same thing happens with my 2011 MacBook Air with the built in 11" display! It didn't do it on 10.7 Lion, only on 10.8 Mountain Lion.

FearGhost · Feb 12, 2013, 01:31 PM

Thanks rbrian, I also have a MBA 11" 2011 but it is fine on ML 10.8.2??

I just got off the phone with Apple Support who talked me through the SMC reset. It seems to have cured the problem for now!

rbrian · Feb 12, 2013, 02:51 PM

I've just reset my smc. I'll keep an eye on it and see if that fixes it.

FearGhost · Feb 13, 2013, 03:47 AM

Looks like the problem is back again!

FearGhost · Feb 13, 2013, 12:57 PM

After speaking to Apple Support again it would appear that the problem was caused by a corrupt installation of Adobe Flash Player! Re-installing it seems to have fixed the problem now

rbrian · Feb 13, 2013, 02:31 PM

Hmm, that's odd. I don't have Flash on my Air; I use John Gruber's method of using Chrome when I really need it. I'm pretty sure I heard about that before I got my Air, so it shouldn't have ever had Flash... Come to think of it it happens most often after I've been watching a full screen video in Chrome and shut the lid without stopping it.

http://daringfireball.net/2010/11/flash_free_and_cheating_with_google_chrome

FearGhost · Feb 13, 2013, 03:23 PM

I'm not 100% sure that its solved the problem, but it did while I was talking to Support. The SMC reset yesterday seemed to clear the problem for a while too. It's definitely not a hardware issue though as I booted from an external drive with ML on it and it was fine...... I may try a clean install of ML if the problem is still there!....

rbrian · Feb 13, 2013, 03:40 PM

Well we're making progress! It's definitely a software issue, which ought to be fixed in an update, like the Mac mini HDMI bug. I don't know enough to be able to diagnose it much further than that; I grew up with Windows, Unix is all Greek to me.

Feb 11, 2013, 01:54 PM	#1
FearGhost macrumors member Join Date: Apr 2011 Location: Cambridge, UK	Mac mini 2012 and Apple LED Cinema Display 27" Hi, I recently upgraded my 2011 Mac mini to a 2012 Mac mini Server. I was using my Apple LED Cinema Display 27" with the 2011 model with no problems at all. But now, using the server, I find that the screen flashes bright white for a split second when waking from sleep. The image quickly returns to normal and is fine after that. Has anyone else seen this? I've tried resetting the Pram but it made no difference. Any other suggestions on what to try to stop this happening? Thanks. __________________ 13" MBP 2012 i7 2.9Ghz 11" MBA 2011, i5, 4GB Apple Cinema 27" Mac mini server 2012, i7 2.3Ghz, 16GB iPad mini 64GB WiFi iPhone 5 64GB Black
	0

Feb 12, 2013, 10:37 AM	#2
FearGhost Thread Starter macrumors member Join Date: Apr 2011 Location: Cambridge, UK	No one? I guess I better take the mac mini back to the Apple Store to get it checked __________________ 13" MBP 2012 i7 2.9Ghz 11" MBA 2011, i5, 4GB Apple Cinema 27" Mac mini server 2012, i7 2.3Ghz, 16GB iPad mini 64GB WiFi iPhone 5 64GB Black
	0

Feb 12, 2013, 10:50 AM	#4
FearGhost Thread Starter macrumors member Join Date: Apr 2011 Location: Cambridge, UK	Thanks for the response. What worries me is it's more like a camera flash going off every time the ACD comes on! And its definitely the Mac mini 2012 because I have re-connected the 2011 Mac mini and its fine. I called into the Apple Store today and their Mac mini 2012 doesn't do it connected to their Thunderbolt display...... __________________ 13" MBP 2012 i7 2.9Ghz 11" MBA 2011, i5, 4GB Apple Cinema 27" Mac mini server 2012, i7 2.3Ghz, 16GB iPad mini 64GB WiFi iPhone 5 64GB Black
	0

Feb 12, 2013, 01:31 PM	#6
FearGhost Thread Starter macrumors member Join Date: Apr 2011 Location: Cambridge, UK	Thanks rbrian, I also have a MBA 11" 2011 but it is fine on ML 10.8.2?? I just got off the phone with Apple Support who talked me through the SMC reset. It seems to have cured the problem for now! __________________ 13" MBP 2012 i7 2.9Ghz 11" MBA 2011, i5, 4GB Apple Cinema 27" Mac mini server 2012, i7 2.3Ghz, 16GB iPad mini 64GB WiFi iPhone 5 64GB Black
	0

Feb 13, 2013, 03:47 AM	#8
FearGhost Thread Starter macrumors member Join Date: Apr 2011 Location: Cambridge, UK	Looks like the problem is back again! __________________ 13" MBP 2012 i7 2.9Ghz 11" MBA 2011, i5, 4GB Apple Cinema 27" Mac mini server 2012, i7 2.3Ghz, 16GB iPad mini 64GB WiFi iPhone 5 64GB Black
	0

Feb 12, 2013, 10:44 AM	#3
SVTmaniac macrumors newbie Join Date: Jan 2013	Mine with a 27" TBD does not do it. But I'm not sure it's something I'd take it back for even if it did.
	0

Feb 12, 2013, 12:59 PM	#5
rbrian macrumors 6502 Join Date: Jul 2011 Location: Aberdeen, Scotland	I suspect it has more to do with the OS than the hardware - I say that because the exact same thing happens with my 2011 MacBook Air with the built in 11" display! It didn't do it on 10.7 Lion, only on 10.8 Mountain Lion.
	0

Feb 12, 2013, 02:51 PM	#7
rbrian macrumors 6502 Join Date: Jul 2011 Location: Aberdeen, Scotland	I've just reset my smc. I'll keep an eye on it and see if that fixes it.
	0

Feb 13, 2013, 12:57 PM	#9
FearGhost Thread Starter macrumors member Join Date: Apr 2011 Location: Cambridge, UK	After speaking to Apple Support again it would appear that the problem was caused by a corrupt installation of Adobe Flash Player! Re-installing it seems to have fixed the problem now __________________ 13" MBP 2012 i7 2.9Ghz 11" MBA 2011, i5, 4GB Apple Cinema 27" Mac mini server 2012, i7 2.3Ghz, 16GB iPad mini 64GB WiFi iPhone 5 64GB Black
	0

Feb 13, 2013, 02:31 PM	#10
rbrian macrumors 6502 Join Date: Jul 2011 Location: Aberdeen, Scotland	Hmm, that's odd. I don't have Flash on my Air; I use John Gruber's method of using Chrome when I really need it. I'm pretty sure I heard about that before I got my Air, so it shouldn't have ever had Flash... Come to think of it it happens most often after I've been watching a full screen video in Chrome and shut the lid without stopping it. http://daringfireball.net/2010/11/flash_free_and_cheating_with_google_chrome
	0

Feb 13, 2013, 03:23 PM	#11
FearGhost Thread Starter macrumors member Join Date: Apr 2011 Location: Cambridge, UK	I'm not 100% sure that its solved the problem, but it did while I was talking to Support. The SMC reset yesterday seemed to clear the problem for a while too. It's definitely not a hardware issue though as I booted from an external drive with ML on it and it was fine...... I may try a clean install of ML if the problem is still there!.... __________________ 13" MBP 2012 i7 2.9Ghz 11" MBA 2011, i5, 4GB Apple Cinema 27" Mac mini server 2012, i7 2.3Ghz, 16GB iPad mini 64GB WiFi iPhone 5 64GB Black
	0

Feb 13, 2013, 03:40 PM	#12
rbrian macrumors 6502 Join Date: Jul 2011 Location: Aberdeen, Scotland	Well we're making progress! It's definitely a software issue, which ought to be fixed in an update, like the Mac mini HDMI bug. I don't know enough to be able to diagnose it much further than that; I grew up with Windows, Unix is all Greek to me. __________________ 2011 11" Air i5 1.6/4/128; 2011 Mac mini; iPad 3 32GB WiFi; iPhone 5 64GB; Apple TV3
	0

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