MacOS – Missing scaled resolution for external 4K display on MacBook 2016

displaymacosresolution

I'm running my MacBook 2016 attached to LG 27MU67-B operating fine in native 4K resolution. But the choices for scaled (DPI)resolution are somewhat broken.

In display preferences pane I'm presented scaled resolution setting choices as follows:

  • 3840 x 2160
  • 1920 x 1080
  • 1680 x 945
  • and more useless resolutions.

I'm currently forced to use 1920×1080 which results on a ridiculously zoomed in UI. The highest resolution is native resolution which is a bit too small to work with. With a MacBookPro 2012 I get a 2400-something resolution, which is not available on the MacBook. Is this limit imposed by the MacBook hardware ? Or is it possible to activate more higher resolutions than 1920×1080 but lower than 3840 x 2160 with a defaults write trick ?

This is a screenshot of my currently possible settings:

enter image description here

Best Answer

Select the highest resolution and then alt-click the Scaled radio-button. You can then select scaling of the UI: enter image description here