Dell 27" 4k P2715Q Monitor - No DP Signal?

Discussion in 'Mac Accessories' started by Molson1020, Oct 1, 2018.

  1. Molson1020 macrumors regular

    Joined:
    Feb 3, 2009
    #1
    So I've had this monitor for a few years now, and it's always worked great. Recently though it won't connect to my MacBook Pros (personal one and my work one) using the DisplayPart to MiniDP cable. I even tried buying a new one and still no luck.

    It connects via HDMI, but only at 30Mhz. Anyone know what might be causing this issue?

    Thanks.
     
  2. Molson1020 thread starter macrumors regular

    Joined:
    Feb 3, 2009
    #2
    Replying to my own thread.

    After a week of searching for answers, I found a solution! For whatever reason, my MacBook Pro won't detect a Displayport Cable, but has no problem with an HDMI cable. Only problem is HDMI goes through at 30hz.

    I purchased an HDMI -> Mini Display Port adapter that can handle 4k at 60hz and it's working great now.

    Just incase anyone else has the same problem.
     
  3. Fishrrman macrumors P6

    Fishrrman

    Joined:
    Feb 20, 2009
    #3
    An important question:
    What YEAR is the MacBook Pro?

    Some USB-c to displayport cables will work with 2016 MBP's, but WILL NOT WORK with 2017/18 models.
    Depends on the cable.

    The way to overcome this is to use a "known good" cable that DOES work with 2017/18 models...
     
  4. Molson1020 thread starter macrumors regular

    Joined:
    Feb 3, 2009
    #4
    I am actually on a 2015 MacBook Pro, so I needed a HDMI -> Thunderbolt/MiniDP adapter.
     

Share This Page

3 October 1, 2018