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  • 345. Re: Mac Mini (2012) HDMI losing sync (blank screen/snow)
    rcarmic Level 1 Level 1 (0 points)

    Have the same set up as yours, although, my second monitor is a Dell. My TB Display would flicker and at times go completely to black screen.

     

    My problem was the 16GB OWC ram I installed. When I removed the OWC ram and installed Kingston ram the problem went away.

     

    I came to this conclusion by following this thread; https://discussions.apple.com/thread/3340067?start=0&tstart=0

     

    I hope it can be of some help.

  • 346. Re: Mac Mini (2012) HDMI losing sync (blank screen/snow)
    stpete111 Level 1 Level 1 (0 points)

    Ugh, Kung Foo, that's brutally annoying.  I REALLY should just bring mine back for a refund and wait until the new ones come out. But I spent two days straight getting this sucker set up and I love it otherwise.

  • 347. Re: Mac Mini (2012) HDMI losing sync (blank screen/snow)
    stpete111 Level 1 Level 1 (0 points)

    Hmm, very good info, Rcarmic, thank you for that.  I just ordered Crucial RAM for mine.  Is Crucial on par with Kingston as far as quality?  I hope so...

  • 348. Re: Mac Mini (2012) HDMI losing sync (blank screen/snow)
    Michael Aos Level 1 Level 1 (80 points)

    rcarmic wrote:

     

    Have the same set up as yours, although, my second monitor is a Dell. My TB Display would flicker and at times go completely to black screen.

     

    My problem was the 16GB OWC ram I installed. When I removed the OWC ram and installed Kingston ram the problem went away.

     

    I came to this conclusion by following this thread; https://discussions.apple.com/thread/3340067?start=0&tstart=0

     

    I hope it can be of some help.

    Same problem -- OWC RAM -- same solution -- replaced with Kingston HyperX Plug n Play 16GB (2x8GB) Kit of 2 1600MHz PC3-12800 DDR3 Non-ECC CL9 SODIMM Notebook Memory KHX16S9P1K2/16.

  • 349. Re: Mac Mini (2012) HDMI losing sync (blank screen/snow)
    stpete111 Level 1 Level 1 (0 points)

    Thanks Michael and Rcarmic.  I'm sending back my Crucial and exchanging for Kingston, just to be safe.

  • 350. Re: Mac Mini (2012) HDMI losing sync (blank screen/snow)
    Kung-Foo-Kamel Level 1 Level 1 (0 points)

    Last night I removed the 16GB of Strotium branded ram and put the genuine ELPIDA 2 x 2GB back in and everything functions perfectly, so I can really blame the R&D guys at apple as everything does work beautifully, I do remember the brand of ram I purchased had "Apple Certified Ram" but was a little more expensive and wasn't actually in stock so I just purchased normal SODIMMS at the right spec, Im about to pick up some of the apple certified stuff today, I'm not sure if its the fact that I have 16GB or if its not compliant, I might see if there is of that Kingston stuff floating around in AU.

     

    Its certainly a strange one, I have built many PC's and owned and upgraded many Macs and usually ram either works or it doesn't, when we talk about OC'ing and performance one understands different ram works better than others but in this case its just stock use, really strange, its like when you switch to dual monitors it uses some area of the ram for screen buffering that it never used before with only 1 monitor and starts to act up, a large percentage of users only have one screen so using any old ram will just work fine, but it takes poor suckers like us to realize "apples" aren't always "apples" pardon the pun

     

    Im glad that we have made some headway on the issue ourselves, after I have purchase different and have tested it I will post here and let everyone know how I went and what type I have used, hopefully our dramas will help others out.

  • 351. Re: Mac Mini (2012) HDMI losing sync (blank screen/snow)
    Kung-Foo-Kamel Level 1 Level 1 (0 points)

    Hay rcarmic

     

    Whats the model number of the Kinston ram you used, I have KVR16S1158/4 or KVR16S1158/8 available, no one is elling the Hyper X in SODIMM around here, there some other brands like Geil and ADATA but I dont want to just by more ram randomly as its hard to return if one has opened it, there snakey about taking it back, I also dont want to lug 2 thunderbolt displays and a mac mini around town testing ram lol

     

    Kinston also have Certified ram but there is non locally, it appears to be same spec as the Strontium certified stuff, CL11

  • 352. Re: Mac Mini (2012) HDMI losing sync (blank screen/snow)
    rcarmic Level 1 Level 1 (0 points)

    Kingston makes ram specifically for Apple products and it is the "KTA" brand. In my case I purchased 2 X KTA-MB1600/8G.

  • 353. Re: Mac Mini (2012) HDMI losing sync (blank screen/snow)
    Kung-Foo-Kamel Level 1 Level 1 (0 points)

    Cheers for that rcarmic, there doesnt seem to be any available here, at least I know that the 8GB Certified Ram Dimms work, I will just get myself some 4GB ones today and order the 8GB ones over the web, my rig really suffers now with onlly 8GB single channel ram, I usually have multible video encoding threads running will editing other video and its now taking twice as long as normal, Im thinking its more to do with dual channel rather than amount but I do an awful lot of multi tasking on my little power house, cant wait for the new Mac Pro, hopefully my Thunderbolt displays work with no issues on one of them

  • 354. Re: Mac Mini (2012) HDMI losing sync (blank screen/snow)
    bobmepp Level 1 Level 1 (0 points)

    I'll throw into the mix here that the 16 GB RAM I bought was from Crucial, which calls itself the "consumer" division of Micron. I called Crucial before getting the RAM and the rep I spoke to said that Micron makes the memory for Apple. Sure enough, when I removed the 4 GB RAM that came installed in my mini, there was the Micron logo, same as the logo on the Crucial memory. Anyway, I continue to have no problems at all, although there is a certain level of discomfort in thinking that I am merely lucky. I am new to Apple, and am a bit surprised that no one from Apple ever seems to jump into these discussions, the way Adobe reps will dive into discussions there. I love my Mac mini, have loved the service at my local Apple store, but am a bit mystified by the corporate aloofness.

  • 355. Re: Mac Mini (2012) HDMI losing sync (blank screen/snow)
    Kung-Foo-Kamel Level 1 Level 1 (0 points)

    The Strotium brand ram I have has Micron chips on it, this ram does not work properly, the ram my mac was shipped with is ELPIDA, ELPIDA is owned by Micron, but the chips are not Micron, there ELPIDA and they work fine, it's a mixed bag of results, post the model number of the ram from Crucial as we now know these chips work as well, maybe someone should start a thread with part numbers that do and do not work, this might save some people some major troubles.

  • 356. Re: Mac Mini (2012) HDMI losing sync (blank screen/snow)
    Tnadu Level 1 Level 1 (0 points)

    I have been using Crucial memory exclusively in my Macs for a number of years and have never had any issues. I have removed original 'Apple' memory manufactured in Korea (Hynix) and China (Samsung). Companies as large as Apple have their PCB's manufactured to their specs so looking at brand names is probably not the best way to determine compatibility. Crucial does guarantee compatibility with Mac and I've recommended it to others who also have had no complaint.

     

    But getting back to the original thread topic of HDMI losing sync (blank screen/snow), this is NOT a RAM issue; it is the Intel HD-4000 integrated video chip that is the problem with the 2012 Mini. In all likelihood the only fix for this would be replacing the HD-4000 (certainly no software or firmware fix Apple has released has fixed the problem in the better part of a year), which of course would require replacing the entire logic PCB. Intel has been aware of this problem for almost a year based on threads on the Intel site and no doubt the new HD-5000 addresses this issue. I returned my 2012 Mini and recommend others do the same if you really want to get Apples's attention.

  • 357. Re: Mac Mini (2012) HDMI losing sync (blank screen/snow)
    Michael Graubart Level 2 Level 2 (250 points)

    I am sorry to come back into this discussion once more, but in the light of recent posts I really need some advice.

     

    It seems to me that putting together the posts that tell of improvements as a result of inserting different makes of RAM and posts that state that the fault lies with the Intel graphics card (and that Intel knows about it), there must be an interaction between the two and the ultimate cure cannot be a simple one of replacing one or the other.

     

    I am anyway not technically competent enough to go in for upgrading my mini, and I do not know at the moment whether I am still within the return period. But I have had the mini since April, have loaded into it a great deal of sometimes very expensive software (Photoshop, Finale, etc.) and by now have a great deal of my own work — writings, correspondence, accounts, musical scores, recordings  — stored on it. The problem with the screen (and I only use one monitor) only now occurs once every few days, apparently quite at random. In fact the last time was shortly after I had changed from using the HDMI/DVI cable and started using the DisplayPort one — but with the HDMI cable still in place, plugged into the Dell monitor and lying alongside the DisplayPort one, though, of course,not plugged into the computer, which may be relevant because of the poor screening of the DisplayPort cable that has been reported.

     

    I have now removed the HDMI cable altogether and, as reported above, have deleted the two old screen-savers that appeared when the screen went black for a moment before. So far, after about 24 hours,  I have had no more trouble, but in view of the random occurrence of the phenomenon that may not mean much.

     

    If I return the mini (assuming I still can) I shall lose a tremendous amount of stuff — too much, I guess, to back up in the Cloud first. What do you experts recommend me to do?

  • 358. Re: Mac Mini (2012) HDMI losing sync (blank screen/snow)
    Tnadu Level 1 Level 1 (0 points)

    Apple only offers a 14 day return policy. Some retailers may offer up to a month, but that's about it. So it looks like you're stuck with it unless you want to sell it privately. I'd recommend you open a support claim with Apple and keep after them. Once the 2013 Mini comes out at the end of the year maybe Apple will start replacing logic boards to fix the problem, but who knows.

  • 359. Re: Mac Mini (2012) HDMI losing sync (blank screen/snow)
    stpete111 Level 1 Level 1 (0 points)

    I got mine at Best Buy a week ago.  So I have 3 more weeks to sit here torture myself over whether to return it or be happy with the fact that everything is now fine with using DVI instead of HDMI, as well as upgraded RAM (I would have upgraded the RAM no matter what anyway). 

     

    Part of me wants to return it for obvious reasons, and part of me isn't willing to throw away the setup work I've done so far or wait for the 2013's to come out.  Guess I'll keep teetering for 3 more weeks.

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