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light colors are gone for Mac Mini (late 2012)

18072 Views 83 Replies Latest reply: Jun 4, 2013 11:47 PM by nickway RSS Branched to a new discussion.
  • knight011 Level 1 Level 1 (5 points)
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    Nov 7, 2012 4:34 AM (in response to koyeung)

    I've only had the mini for a week and don't want to return it incase it turns out to be a software issue and Apple release a fix.

    As a temporary measure I'm using Gamma Control and followed instructions from another forum

    This has bought the colours back to acceptable level and I'm not getting that shadow effect as detailed in the original post.

    Mac mini (Late 2012), OS X Mountain Lion (10.8.2)
  • Letterus Level 1 Level 1 (0 points)
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    Nov 7, 2012 9:31 AM (in response to koyeung)

    I had the same problem using a new Mac mini 6,1 and an HDMI cable (HDMI out at the Mac mini and HDMI in at the monitor as well as DisplayPort out at the Mac mini and HDMI in at the monitor). I called the Apple support and they sent me a new Mac mini because they thought my graphics ports were defect. It wasn't. The second Mac mini had the same issue.


    This is how I worked around the problem: I bought a DVI cable and connected the display using the HDMI->DVI adaptor. All colors are fine now.


    To be true: This behaviour is what I would expect from 2nd hand hardware and Microsoft systems but not from Apple. But times do change it seems...

  • Scratchen Level 1 Level 1 (5 points)
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    Nov 7, 2012 12:05 PM (in response to koyeung)

    I've got the same problem! Light colours seem "burned out", it's difficult to explain, but it looks like in your original post.


    Tried my Mini late 2012 on a different monitor - same problem.

    Tried my Mini late 2012 with a DVI-cable instead of straight HDMI - same problem.


    Also, I've tried to calibrate my monitor countless times now, but it just doesn't get right..


    This clearly is a HW-issue!

  • soundx Level 1 Level 1 (0 points)
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    Nov 7, 2012 1:03 PM (in response to knight011)

    The issue from what I am reading up in the Intel forums is that the HDMI thinks your monitor is a TV and it switches into Limited RGB mode where the colors are clamped between 16-235 range. Playing with the gamma controls might help the colors visually, but it can't compensate for the missing color ranges the HDMI port isn't sending.


    I've switched to using a mDp->VGA and I can clearly see the difference in color range compared to the HDMI output. The gray gradients on the windows are very smooth and the font aliasing for LCDs setting works as normal.


    From multiple reports, it seems that the HDMI->DVI connector seems to be okay, so that would imply that the HDMI is actually capable of outputting the full range of colors. I'm hoping for a driver fix.

  • Rob Walch Calculating status...
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    Nov 7, 2012 7:21 PM (in response to soundx)

    Thanks soundx.


    Same problem here. Mac Mini Late 2012, HDMI to Sharp Aquos. I noticed that highlights were blown out on the first video I watched. I was only able to partially compensate for the issue by calibrating the display profile and the TV settings.


    So annoying! What/where's the fix?

  • knight011 Level 1 Level 1 (5 points)
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    Nov 8, 2012 11:04 AM (in response to koyeung)

    I purchased a new monitor about a month ago, a LG M2382D, works perfectly with Windows 7 with HDMI > HDMI.  This monitor only has 2x HDMI and 1x VGA. 

    I connected my old HP L2045w DVI monitor via supplied HDMI > DVI adapter and it created the correct colour profile L2045w for the monitor and the colours look normal (compared to HDMI).  I reconnect my LG and no profile is created and it defaults to HD709-A with over exposed whites.

  • soundx Level 1 Level 1 (0 points)
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    Nov 8, 2012 11:44 AM (in response to knight011)

    knight011, this is great news! So it the issue is a bug in the way Apple is interpreting color profiles then. Maybe someone else who can install Windows can verify this?

  • knight011 Level 1 Level 1 (5 points)
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    Nov 8, 2012 1:04 PM (in response to soundx)

    soundx, it looks like a software colour profiles bug which you describe.  The Windows 7 machine I was talking about is my old windows desktop, which I used with my LG monitor via HDMI until I got the Mini. 

    All the other testing with the connections HDMI > DVI (HP L2045w DVI monitor - correct colour profile detected and selected) and HDMI > HDMI (LG monitor - incorrect colour profile detected) I did with the Mini with OSX 10.8.2. I have no Windows OS on the Mini yet.

    It looks like to me the custom Mountain Lion version for the Mini is not reading the monitors' EDID info correctly when connecting via HDMI > HDMI.  But works if connecting via the supplied HDMI > DVI adapter.  Most likely culprit is the display/HDMI driver/firmware.


    There are very similar issues (flickering, colours washed out) being reported and described on intel forums where people are running Windows OS and connecting via HDMI with Intel 4000 graphics.  Looks to be a Intel 4000HD firmware/driver issue.

  • Scratchen Level 1 Level 1 (5 points)
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    Nov 8, 2012 1:09 PM (in response to knight011)

    Well, it doesn't work correctly with the supplied HDMI->DVI adapter for me. Im running that adapter now, hooked up to a brand new HP ZR2440w, and I still have washed out light colours aswell as occasional black flickering and the color noise.

  • DLDante Calculating status...
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    Nov 14, 2012 9:11 PM (in response to koyeung)

    I guess I'll add my voice to the group of folks having HDMI issues. I just received my 2012 mini today and it looks terrible via HDMI. I'm seeing all of the same ugliness described in this thread. I've been using the same monitor and HDMI cable with my 2011 mini and it works flawlessly. I even switched back to the 2011 after trying the 2012 just to be sure I wasn't going crazy. Sure enough, the problem is the 2012 mini and not the monitor or cable.


    I have a Genius appointment tomorrow but I don't have high hopes for a solution judging from everything I've been reading this evening .

  • Calculating status...
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    Nov 15, 2012 3:44 AM (in response to koyeung)

    I've got the same problems. Got my Mac mini yesterday and freaked out about the white colors (HDMI to HDMI). Now I've connected the Mini over HDMI to DVI to my 23" Samsung LED and it looks like, that this will temporary fix the problem.

  • UrielGarciaC Level 1 Level 1 (5 points)
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    Nov 17, 2012 6:53 PM (in response to koyeung)

    Same problem with my new Mac mini 2012, HDMI-DVI , and Thunderbolt-HDMI in a Samsung LED monitor , seems to be a problem with the gamma, maybe a Color Sync profile fix or something

  • AwwYeahh Level 1 Level 1 (15 points)
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    Nov 18, 2012 3:54 AM (in response to UrielGarciaC)

    I have a macbook air 2012 with the same problem if you search around everyone has the issue, mac mini, macbook, and macbook air. All the same problem with hdmi .


    In my case its a 13inch macbook air 2012 , connected with a thunderbolt to hdmi adapter from Moshi (sold by apple) connected to an apple hdmi cable (brand new from apple) to my LG LED TV (which is brand new, and should support 1080p)


    If i raise the resolution the colors are washed out and fonts are blurry! Its very sad indeed with no fix in sight


    The latest updates from apple for graphics did not fix anything


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