.Bunny

Q: Mac Mini (2012) HDMI losing sync (blank screen/snow)

Looks like my mini has the HDMI issue that others have reported on the macrumors forums as well as here.

 

Mine exhibits the blank screen/snow issue ONLY when the HDMI port is used.  This happens with HDMI->DVI adapter and also with pure HDMI cabling.

 

With the same screen, mini and DVI cable this does not occur.

 

This is a fresh Mini 2012 Server i7 model.

 

Do I need to report this in an official capacity somewhere (this is only the second ever apple hardware fault I've encountered in twenty years).  Should I just be patient for a possible fix (as I don't need the hdmi port

Mac mini, OS X Mountain Lion (10.8.2), 2012 Server i7 2.3GHz, SSD+HDD 16GB

Posted on Nov 8, 2012 1:24 PM

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Q: Mac Mini (2012) HDMI losing sync (blank screen/snow)

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  • by mocicka,

    mocicka mocicka Nov 14, 2012 2:31 PM in response to Robert Hoffman
    Level 1 (0 points)
    Nov 14, 2012 2:31 PM in response to Robert Hoffman

    Robert Hoffman - just to be sure, what kind of display do you have connected via HDMI? 1080 or less might be ok either way.

  • by Robert Hoffman,

    Robert Hoffman Robert Hoffman Nov 14, 2012 2:42 PM in response to mocicka
    Level 1 (34 points)
    Mac OS X
    Nov 14, 2012 2:42 PM in response to mocicka

    I have a 22 in Viewsonic 1080HD monitor.

  • by zsea,

    zsea zsea Nov 14, 2012 11:02 PM in response to .Bunny
    Level 1 (0 points)
    Nov 14, 2012 11:02 PM in response to .Bunny

    I have the same problems -- NEC PA241w monitor that's been flawless on 2 macs and a pc. Getting both snow and blackouts. 2.6 i7 chip. Tried both an HDMI cable, and apple's hdmi adaptor.

  • by Zuul77,

    Zuul77 Zuul77 Nov 15, 2012 6:21 AM in response to zsea
    Level 1 (0 points)
    Nov 15, 2012 6:21 AM in response to zsea

    Other than writing this on here and phoning apple only to be told they've not heard of this, has anyone got an idea of how we can get this noted. Seems like too many people have got this problem an it needs fixing

  • by JimmyJimmyYam,

    JimmyJimmyYam JimmyJimmyYam Nov 15, 2012 6:25 AM in response to Zuul77
    Level 1 (5 points)
    Nov 15, 2012 6:25 AM in response to Zuul77

    http://www.apple.com/feedback/macmini.html

     

    I submitted feedback on fuzzy text already, but not the HDMI/sync issue (I am lucky and not seen that one yet).

  • by Ciccilleju,

    Ciccilleju Ciccilleju Nov 15, 2012 6:50 AM in response to Zuul77
    Level 1 (0 points)
    Nov 15, 2012 6:50 AM in response to Zuul77

    they will change the hdmi port of mine on monday, i hope it will fix it.

  • by Robert Hoffman,

    Robert Hoffman Robert Hoffman Nov 15, 2012 12:11 PM in response to Ciccilleju
    Level 1 (34 points)
    Mac OS X
    Nov 15, 2012 12:11 PM in response to Ciccilleju

    what reason did they give regarding the replacement? Are they admitting there is a defect with HDMI? wondering if they will be contacting everyone that recently bought the new Mac mini.

  • by Ciccilleju,

    Ciccilleju Ciccilleju Nov 15, 2012 12:56 PM in response to Robert Hoffman
    Level 1 (0 points)
    Nov 15, 2012 12:56 PM in response to Robert Hoffman

    the italian (i'm italian) apple customer care told me "yes, it looks like an hardware issue, you can take your mac mini to the nearest apple shop and they will fix this" - when i went to the store they told me that ONLY DURING THIS WEEK they replace already A LOT of hdmi ports

  • by Westyfield2,

    Westyfield2 Westyfield2 Nov 15, 2012 4:31 PM in response to .Bunny
    Level 1 (5 points)
    Nov 15, 2012 4:31 PM in response to .Bunny

    Interesting that no-one has had any problems when using the MDP/Thunderbolt port with a HDMI adapter.  I can't thing what would be different to the native HDMI port really… which makes me think maybe it's hardware not software/firmware at fault?

     

     

    @Ciccilleju:  That sounds good!

  • by netguden,

    netguden netguden Nov 15, 2012 10:41 PM in response to .Bunny
    Level 1 (10 points)
    Nov 15, 2012 10:41 PM in response to .Bunny

    I just bought the new mac mini but has a problem that the screen sometimes loses sync.

     

    I've tried a lot of things but nothing helps, may sometimes reboot.

     

    Hilsen Henrik

     

    Denmark

  • by Freisi,

    Freisi Freisi Nov 15, 2012 11:09 PM in response to .Bunny
    Level 1 (0 points)
    Nov 15, 2012 11:09 PM in response to .Bunny

    Hi guys.

    I have the low-end model of MM Late 2012 and ofc the same issue with blackouts.

    We all should wait for sw update - new EFI.

     

    I found discussion directly on intel page - look here http://communities.intel.com/thread/30096?start=0&tstart=0

    Its global problem with Intel HD4000, so other notebooks have this problem.

     

    Intel's explanation:

     

    This issue is a BIOS issue specifically with the Memory Reference Code (MRC) version 1.4.0.0 or older. Please contact your system or motherboard manufacturer for a system BIOS update for your system or motherboard that includes MRC 1.5.0.0 or newer.

    If you have a system with 2 or more memory modules and are comfortable with removing all but one of them so that your memory is in single channel mode, try and remove all but one of them and the issue will go away. This can be used as a workaround until you are able to update your system BIOS from your system or motherboard manufacturer that includes MRC 1.5.0.0 or newer.

     

    So, we have to wait for sw fix first from Intel and then from Apple.

    I hope it will be soon.

     

    Regards,

    Freisi

  • by calvol,

    calvol calvol Nov 16, 2012 7:52 AM in response to Freisi
    Level 1 (15 points)
    Nov 16, 2012 7:52 AM in response to Freisi

    Nope, MRC 1.5 and 1.6 does NOT fix it, here's a quote from the same thread:

     

    "Thanks for the information.

     

    is Intel planning on releasing updated bios binaries for their boards soon ?

     

    i have a DZ77BH-55K and for bios version 83 it says   "Memory Reference Code: Based on SA-RC_1.60"  I assume this is higher than 1.5 so it should be fixed in this release ?

     

    (FYI, I still have the issues with that bios version, also release 85)

  • by Ciccilleju,

    Ciccilleju Ciccilleju Nov 16, 2012 8:43 AM in response to Freisi
    Level 1 (0 points)
    Nov 16, 2012 8:43 AM in response to Freisi

    i tried to remove one of the 2 memories but the issue goes on anyway

     

    i can't wait to give it back to apple.

  • by Scott Gibby,

    Scott Gibby Scott Gibby Nov 16, 2012 8:08 PM in response to .Bunny
    Level 1 (0 points)
    Nov 16, 2012 8:08 PM in response to .Bunny

    I have the same problem.  I'm using HDMI to DVI and a Dell 24" IPS monitor.  I either get a blank screen or blank screen followed by snow.

  • by Alex Lui,

    Alex Lui Alex Lui Nov 17, 2012 7:07 PM in response to .Bunny
    Level 1 (0 points)
    Nov 17, 2012 7:07 PM in response to .Bunny

    Same issue with my Samgsung SyncMaster BX2250.

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