cMBP 13'' m/2012: 2560x1440 over DP fails

Discussion in 'MacBook Pro' started by senthor, Nov 13, 2015.

  1. senthor macrumors regular

    Joined:
    Jun 16, 2012
    #1
    Hi everyone,
    I recently purchased a Dell U2515H monitor. I want to use it with my MacBook Pro 13'' 2012, non-Retina, 2.5GHz. According to the tech specs, this MacBook can drive a single 2560x1600 pixel display (http://www.apple.com/macbook-pro/specs/). However, for me, it fails:

    [​IMG]

    I tried two different DisplayPort-cables, one came bundled with the screen. Running the display at 2048*1152 pixels (the second highest resolution) works fine. OS X preselects 60Hz, I can't change that.

    Any idea?

    Thanks!
     
  2. senthor thread starter macrumors regular

    Joined:
    Jun 16, 2012
    #2
    I tried a reboot, I tried another user account, I tried a different port on the monitor...
    Is this an issue of my MBP or of the screen? Any idea how to find this out?
     
  3. senthor thread starter macrumors regular

    Joined:
    Jun 16, 2012
    #3
    Just tried Windows 10 on the same machine. (The really obvious solution). Works flawlessly, 2560x1440@60Hz.
    Will try a fresh OS X on external drive...
     

Share This Page