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Mac Mini 2012 video blinking out

154083 Views 1,193 Replies Latest reply: Mar 29, 2014 2:11 AM by knightshade91 RSS Branched to a new discussion.
  • Tiberia Calculating status...
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    Nov 17, 2012 6:06 PM (in response to KevCheng)

    An update on my experience, when just using the internet or basic Mac OS the problem is intermittent, maybe one screen blackout every hour or so but I do regularly see lots of flickering pixels and horizontal lines on the screen.  In the last 4 days I had only seen 3 "snow storm" screens.

     

    Last night I tried watching a 1080p movie through Plex.  I had to give up after 30 minutes, I had 10 snow storm screens that would last for 2-3 seconds, sometimes the screen would go partial green as well and when this happened I lost sound as well.  I was getting the screen blackouts every 5 minutes, sometimes partial, sometimes full screen, and also the sound would drop out when this happened.

     

    I wonder whether the issue is related to load on the graphics card?  There are no problems with my HDMI cable or TV (65" Sony Bravia) or the mkv file I was viewing.  I plugged in my 2011 model Mac Mini and watched the rest of the movie fine.

     

    I'm leaving my 2012 Mac Mini in the box until they come up with a fix.

     

    btw ... does anyone have the contact details of someone at Apple we can share this information with?  The support people here in Singapore are drones, they keep telling me to reset the pram and run diagnostics which is a waste of my time.

  • jousp Calculating status...
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    Nov 17, 2012 6:15 PM (in response to KevCheng)

    I would also be interested in a US-based number to contact Apple about this, just so they know my Mac Mini is among the affected (and to bypass the customer service people who are indeed drone-like and assume every caller is a complete noob and doesn't know how to do initial triage and diagnostics him- or herself).

     

    My Mini gts the black screen maybe twice a day, and the snow maybe once a day or every other day, so it's not affecting my system like some. I also recently noticed the Parallels window running Windows 7 going black once for a second (just that window, not the entire screen) and I wondered if that was related. If so, that would be point to a firmware or software problem it seems to me and not to a hardware problem.

     

    I can't really return my Mac because it's now my main computer and the black screen/snow issue is too minor to affect my workflow--but it's disappointing to have laid out some serious cash for a brand-new machine with a problem they likely should have known about (or did know about) in advance, since Intel has known about it for several months already.

  • chris.dangelo Calculating status...
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    Nov 17, 2012 7:50 PM (in response to KevCheng)

    I experienced it for the 5th time.  Playing Half-Life 2 Episode 2.  Perhaps it is related to pushing the graphics processes.

  • bradpaulp Calculating status...
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    Nov 17, 2012 8:19 PM (in response to KevCheng)

    I have a 2011 Mac Mini, but have had this exact same problem myself since I purchased it 8/2011. I am using a 23" samsung monitor with DVI input. I used the supplied HDMI to DVI adapter and it flickers all the time. After so many hours on the phone with Apple, they finally sent me the MDP-VGA adapter which works fine for my display. They could have at least sent me a MDP-DVI adapter. It seems the problem is with the HDMI port itself though, since there no problems with the MDP/thunderbolt port. Apple's "engineers" had me run so many tests, I sitll have all of the emails, its unresolved. I just called it quits one day and settled for a vga connection. There wasnt much talk about this last year, but maybe with the new models they will put a fix to this and support the 2011 models as well as the 2012.

  • BDAqua Level 10 Level 10 (114,800 points)
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    Nov 17, 2012 8:30 PM (in response to bradpaulp)

    What Graphics do you have on yours? The Intel one?

  • calvol Calculating status...
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    Nov 17, 2012 8:33 PM (in response to bradpaulp)

    Bradpaulp, is your 2011 the Mini with the HD4000 graphics or the one with the Radeon 6630M?  I just ordered a 2011 Mini 2.5 with Radeon, and hoping it does not have the same issue!

  • klmorin Calculating status...
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    Nov 17, 2012 9:04 PM (in response to bradpaulp)

    In my case, the problem also occurs in connection MDP / Thunderbolt to HDMI and the solution lies in the HDMI to DVI adapter included. This casts doubt on the fact that the problem is related only to the HDMI port.

    (Mac Mini 2012 and Asus PB238Q monitor).

  • noddy Calculating status...
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    Nov 17, 2012 9:44 PM (in response to KevCheng)

    I'm having the exact same problem.  The screen randomly goes black and occassionally the screen will turn all snowy.  Turning the monitor on and off always fixes the snowy screen problem.

     

    2012 Mac Mini (Purchased in Korea)

    2.3GHz i7 with 16GB memory

    HDMI to DVI

    Samsung SyncMaster P2770HD Monitor

  • BDAqua Level 10 Level 10 (114,800 points)
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    Nov 17, 2012 10:38 PM (in response to calvol)

    Yes, that would be great info, I suspect it is Intel Graphics & not a REAL Graphic card, but would like to hear.

  • Philip Tyler Level 4 Level 4 (2,255 points)
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    Nov 17, 2012 11:32 PM (in response to BDAqua)

    I think all 2012 new model MM's with the Intel 4000 graphics suffer this problem if using the HDMI output.

  • Philip Tyler Level 4 Level 4 (2,255 points)
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    Nov 17, 2012 11:35 PM (in response to noddy)

    That's similar to mine when I got the snow interference which would not go away on it's own I had to cycle the monitor through it's inputs and when I came back to the MM it was fine.

  • BDAqua Level 10 Level 10 (114,800 points)
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    Nov 17, 2012 11:49 PM (in response to Philip Tyler)

    Thanks, but I'm aware of at least one instance where the problem doesn't exist, from a real expert trying to figure this out, but they get no problem!

     

    Starting to wonder if it's a solder/logic board problem of mass production.

  • Philip Tyler Level 4 Level 4 (2,255 points)
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    Nov 18, 2012 12:17 AM (in response to BDAqua)

    I suppose it may be a solder/logic board probllem, but where does that fit in with the non Mac computers?

     

    There seem to be a fair number of PC owners with the same Intel graphics chip which are apparently suffering the same problem.

  • BDAqua Level 10 Level 10 (114,800 points)
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    Nov 18, 2012 12:22 AM (in response to Philip Tyler)

    Indeed, likely wrong on my wondering then, but doesn't explain working ones either... lest it's Intel's Soldering!???

  • bradpaulp Level 1 Level 1 (0 points)
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    Nov 18, 2012 5:33 AM (in response to BDAqua)

    I have the AMD Radeon HD 6630M (256MB). 2.5Ghz i5. I would love to be able to use the HDMI output again. :-/. Especially seeing as how I would like to also one day connect to my TV and run as a server/plex machine.

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