0

I am facing a really perplexing issue where I am unable to use the same settings on two identical monitors.

The Setup:

  • 2016 MacBook Pro 15" on OS 10.12.6
  • Two Asus PB287Q 4K displays
  • Both connected using USB-C -> DisplayPort cables
  • One monitor is vertical and the other is horizontal
    • Rotating so both or horizontal does not change the options available

As you can see from the image below, despite everything being the same (as far as I can tell), I am able to use scaled HiDPI settings on the 2nd monitor but not the first.

Would anyone know what could cause this? Or better yet, what can be done so that I can use scaled HiDPI settings on both monitors?

Identical Monitors, Different HiDPI Settings

Notes / Links:

  • I have seen this article about how maybe it's a software bug, but that wouldn't explain why it works on the second monitor and not on the first
  • I have tried installing Additional Tools for Xcode 9 to enable HiDPI in the quartz settings, but wasn't sure how to get to the new tools.
  • I have tried running the terminal command 'sudo defaults write /Library/Preferences/com.apple.windowserver.plist DisplayResolutionEnabled -bool true' but even after logging out and back in again I couldn't see any changes in the options presented to me.
  • Lastly, I can hold the option key when selecting scaling and pick the 'low resolution' 1440 x 2560 resolution, but what is displayed is not HiDPI and therefore highly pixelated.
  • Slightly kludgy solution given everything should just work out of the box for you, but what about using SwitchResX? – JMY1000 Dec 18 '17 at 5:59
  • A dumb thing to try: are you plugging them into opposite sides? – JMY1000 Dec 18 '17 at 6:19
  • Maybe just like Highlander there can be only one.... – Joonas Dec 18 '17 at 9:45
  • @JMY1000 Thank you for your response. I have tried plugging them both in on the left, or both in on the right side. I have not tried one on left and one on right. I will try this when I return to my desk and report the results. – Krejko Dec 26 '17 at 17:11

Your Answer

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Browse other questions tagged or ask your own question.