Unsupported 4k monitors ??

Discussion in 'macOS Sierra (10.12)' started by mrwuid, Mar 21, 2017.

  1. mrwuid macrumors newbie

    Mar 21, 2017
    Hoping someone here may have faced similar issues and prevailed...
    I have a Macbook Pro Retina 13 inch early 2013 which I am trying to connect to a cheap 4k monitor.
    When I connect it only offers resolutions up to 1920x1080 (have tried the option key on display preferences etc). SwitchResX will scale it up - but the monitor is still only receiving 1920x1080.
    The monitor works fine at 3840x2160 on my linux and windows desktops. My Macbook also happily drives a Dell 4K Monitor at work up to 3840x2160.
    So why does my mac not like this monitor ? Is there a way to force it to a higher resolution ?
  2. Fishrrman macrumors G5


    Feb 20, 2009
    What kind of a -connection/cable- are you using?
  3. mrwuid thread starter macrumors newbie

    Mar 21, 2017
    I have been using a mini-display port to display port cable (plugged in to the thunderbolt ports. Same cable has worked fine on the work monitor - but not for the home one (or at least it works - but only at 1920x1080)...

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