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I want to test non-retina/non-HiDPI mode on macOS Mojave on the built-in display of a MacBook Pro (15-inch, 2017). I found articles that suggest enabling the option sudo defaults write /Library/Preferences/com.apple.windowserver.plist DisplayResolutionEnabled -bool true, restarting the computer, opening System Preferences, selecting Displays, and holding down the option ⌥ key when selecting Scaled should show a list of all available resolutions, including non-HiDPI resolutions; however, I just see the following:

Screenshot of displays

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marked as duplicate by n1000, Community♦ May 10 at 14:04

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  • Meaning you want to select the screen's native resolution? – n1000 May 10 at 12:59
  • I'm not very versed in topics of resolution, but it seems my "native resolution" is 2880x1800 but I got the result I wanted by using the app you recommended and selected 1440x900. – kgibm May 10 at 14:06
  • That would mean your question was falsely flagged as duplicate. If you elaborate your question a bit, I guess you could notify a mod to have it unflagged. But please check if there is not another similar question ;) – n1000 May 10 at 14:10
  • I start to understand, although I am not sure what you could need that for? 1440x900 is what is "simulated", when you select Default for display. – n1000 May 10 at 14:18
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You can use the free App Display Menu.

enter image description here

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  • Thanks, that worked. I opened About This Mac, clicked on Displays, observed the resolution noted there, and then selected the resolution that halved both of these numbers from the Display Menu app. – kgibm May 10 at 14:05

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