Sleep/wake issues with multiple LG UltraFine displays

Discussion in 'Mac Accessories' started by Brookzy, Apr 5, 2017.

  1. Brookzy macrumors 68040

    Brookzy

    Joined:
    May 30, 2010
    Location:
    UK
    #1
    Does anyone find that when waking from sleep with two UltraFine displays connected, sometimes one of them won't turn on?

    (My setup is a 13" Touch Bar Pro connected to two 4K UltraFine displays. The issue has materialised on both displays so it is unlikely to be a faulty unit. All software up to date. The only way to fix it is to disconnect and reconnect the display - a full system reboot won't resolve it. The issue occurs in Guest User mode too.)
     
  2. Brookzy thread starter macrumors 68040

    Brookzy

    Joined:
    May 30, 2010
    Location:
    UK
    #2
    Looks like this is a widespread issue with mentions on Twitter, Reddit, and even the Apple Store review page.

    A dual 4K UltraFine setup is simply unusable - you have to unplug one each time the MacBook sleeps.

    10.12.5 beta doesn't fix it either.
     
  3. craig1410 macrumors 65816

    craig1410

    Joined:
    Mar 22, 2007
    Location:
    Scotland
    #3
    I've not had any issues like this with the dual 5K displays on my 15" MBP so I guess it's either endemic to the 13" MBP or the 4K LG displays.
     

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