13" macbook pro only 30Hz with LG 27UD68

Discussion in 'MacBook Pro' started by mailman199, Nov 5, 2016.

  1. mailman199 macrumors newbie

    mailman199

    Joined:
    Nov 4, 2008
    Location:
    New York
    #1
    Having troubles with my new 2016 MBP 13" baseline. Connecting to an LG 27UD68 4k 27" display via HDMI and an Apple adapter and only getting 30Hz.

    Any ideas why its not running at 60Hz?
     
  2. RetinaFarts macrumors newbie

    Joined:
    Nov 1, 2016
    #2
    Yeah, only HDMI 2.0 can handle 4k @ 60Hz. Use display port if you can, otherwise try to see if your monitor supports HDMI 2.0 and you have an appropriate cable/adapter.
     
  3. mailman199 thread starter macrumors newbie

    mailman199

    Joined:
    Nov 4, 2008
    Location:
    New York
    #3
    Ok, I'm using the Apple USB-C adapter and the LG cable. All say they can handle 60Hz. Not sure DisplayPort is an option on the USB-C only MB models?
     
  4. Altis macrumors 68020

    Joined:
    Sep 10, 2013
    #4
    Perhaps it's going USB-C/TB3 to HDMI 1.4 rather than 2.0.

    I second the idea to try to use a TB3/USB-C to DisplayPort cable.
     
  5. Capt T macrumors 6502a

    Joined:
    Mar 20, 2010
    #5
    The Apple HDMI adaptor only does 4K @ 30hz. As others have said try a USB c to DisplayPort


    http://www.apple.com/shop/product/MJ1K2AM/A/usb-c-digital-av-multiport-adapter?afid=p238|s3kpSGqXc-dt_mtid_1870765e38482_pcrid_52243316890_&cid=aos-us-kwgo-pla-btb-slid--product-MJ1K2AM/A
     
  6. lympero macrumors 6502a

    lympero

    Joined:
    Sep 1, 2008
    Location:
    Arta, Greece
    #6
    From apple website "This adapter allows you to mirror your MacBook or MacBook Pro display to your HDMI-enabled TV or display in up to 1080p at 60Hz or UHD (3840 by 2160) at 30Hz."
     
  7. iizmoo macrumors 6502

    Joined:
    Jan 8, 2014
    #7
    Is your HDMI cable capable of that data transfer? 18Gbps ?
     
  8. fate0311 macrumors 6502

    Joined:
    Dec 31, 2015
    #8
    Hey very curious on your results if you tried using a DP versus HDMI.
     

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