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Mac Mini 2012 video blinking out

I just got my 2012 Mac Mini yesterday (mid range model) and have already noticed three instances where the video would blink out for about a half second, and then come right back. This happend twice already when I'm connected to a Apple 23 inch LCD monitor via the included HDMI-DVI adapter and once when I'm connected via HDMI to my Samsung LCD TV. Anyone else noticing this happening on their Mac Minis? Thanks.

Mac mini, OS X Mountain Lion (10.8.2)

Posted on Oct 27, 2012 8:08 AM

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1,207 replies

Nov 30, 2012 5:05 AM in response to Daz1761

Daz,


Just now and again. In my experience it happened within an hour or so of start-up and then I could go for hours with no problem. When the screen blacks-out I could hardly say "Oh my goodness" or something similar before it came back-up.


With the 'snow', again just occasional but annoying enough to want it fixed, the snow was over the Apple light grey background. I found that turning my monitor off and back on took me back to where I was with no need to sign in again.


In my experience one can work with it, it's just very annoying.


Good luck with your decision.


Be aware that not everybody in Apple at a local level is aware of the problem, likewise many users won't be either if they haven't used the HDMI port.

Nov 30, 2012 5:11 AM in response to BobH47

Today I got a black screen again with the TB>DVI (MDP>DVI) adapter. This time a series of about five one second long black screen, and a few seconds normal between, and then back to fully normal again without any logic reason.


This was the second black screen-issue for me with the MDP>DVI adapter in a couple of days, after running the same adapter for about three weeks without any problem.

Nov 30, 2012 5:13 AM in response to BobH47

Well thank you very much for the complete overview of the graphics problem, I at least know now to avoid the HDMI for now, and use a TB connection to my DVI Samsung monitor. Talking of the "snow", I am using a MBP late 09 with a NEET mini display to dvi, and when both screens go to sleep then are woken back up, my secondary samsung screen just displays "snow" or "digital noise". If you simpley wait about 10 seconds, it sorts itself out and corrects itself. Does this coincide with what you mentioned?


Cheers

Nov 30, 2012 5:14 AM in response to Daz1761

Yes as mentioned the blackouts were quite short, annoying but workable.


As I was running extended desktop what I did in the end was have the application open on the MDP to DVI connected monitor and all the other adjustment windows etc open on the HDMI to DVI screen. That way the blackouts were then only ever in the corner of my eye as I was mainly looking at the MDP/DVI screen.


My replacement, mine was one Apple decided to 'capture', is due to arrive Monday so don't know what to expect. I was e-mailed by someone quite high up in Apple who has taken over my case to let me know when my replacement was due and they want me to e-mail them if I have any problems with the replacement.


Fingers crossed 😀

Nov 30, 2012 7:42 AM in response to KevCheng

I've seen what is being described as snow (noise) four or five times now. Every time but one it was full screen snow, no picture at all, just snow.


But on one occasion the snow was overlayed over the desktop, I could still see everything through the snow.


It would be useful if others who have seen snow could say if they saw just snow or translucent snow and desktop/windows etc.


Seeing noise overlayed on the correct image is something I find very worrying, it 'feels' much more like a hardware fault than something that can be fixed in software/firmware.

Nov 30, 2012 10:27 AM in response to farhansusername

farhansusername wrote:


Quick question: The July 2011 Mac Mini with 2.3GHz Dual Core Intel i5 Processor does NOT have the flickering screen and washed out colours, right?

Yes and no. This thread is about 2012 Mac minis. However some of the 2011 minis had a similar issue. Here is one example:


https://discussions.apple.com/thread/3229009?answerId=16651531022#16651531022


Washed out colors can usually be fixed by calibrating your screen via System Preferences.

Mac Mini 2012 video blinking out

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