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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 1920x1080 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 1920x1080 but lower than 3840 x 2160 with a defaults write trick ?

This is a screenshot of my currently possible settings:

enter image description here

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  • I read somewhere online (don't have a source) that 10.12.1 fixed this for some people. Can you comment on that?
    – aednichols
    Commented Nov 25, 2016 at 5:38
  • Nope. I can not really comment on the old setup, since I returned the HDMI Dongle and switched to another brand (Anker). 10.12.1 was released before I had the new dongle. But now I have 2560x1440 available plus some more. So maybe yes 10.12.1 fixes this issue, maybe no.
    – itsafire
    Commented Nov 25, 2016 at 12:17
  • Thanks, it's helpful to know that the adapter can be a limitation
    – aednichols
    Commented Nov 25, 2016 at 18:09
  • Well even that is not known. Maybe the old adaptor is running better with 10.12.1... It was already returned before I upgraded.
    – itsafire
    Commented Nov 28, 2016 at 8:43

3 Answers 3

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

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  • I switched to the drop down list of scaled resolutions to illustrate my choices. Switching back to simple selection mode does not change the outcome. It is still 3840x2160 or 1920x1080 and nothing in-between.
    – itsafire
    Commented Sep 2, 2016 at 6:42
  • It is not a simple selection mode but rather a scaling of the UI that uses the selected resolution. So you can use the highest resolution without having to look at microscopic UI elements.
    – root
    Commented Sep 2, 2016 at 7:29
  • I am aware of that. I'm running the native 4k resolution suitable for the monitor. But I don't get the choice for specific scaled UI (More Space) resolutions. Please re-read the question if you care.
    – itsafire
    Commented Sep 7, 2016 at 10:11
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I had the same issue for my 2016 MacBook and most of the solution I found on Google didn't work except this third party application which enables hidden ratina resolutions.

Application - http://avi.alkalay.net/software/RDM/ GitHub Project - https://github.com/avibrazil/RDM

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0

I'm on MacOS 14.1 Sonoma Facing same issue.I got a LG 4K HRD monitorand found when I set to 4K, UI is very small. scaling option is missing.but HDR is OK

Actually it's OK to use 1080p since it's 4k looks like 1080p

I made a video to explain it

https://www.youtube.com/watch?v=q-InKgOHzs4

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