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Mac Studio M2 fails to show scaling options for ASUS ProArt PA279CV 

I have a Mac Studio M2 and my problem is as follows:


I purchased the ASUS ProArt PA279CV and connected it via USB-C to my Mac Studio (latest macOS Sequoia).

  • I noticed that text and UI elements are too small in 4K resolution (3840 x 2160), and macOS is not providing proper scaling options (e.g., "Looks like" resolutions or HiDPI).


So, in order to try to overcome this, I tried the following:


Checked System Settings > Displays, but:

    • No "Looks like" (scaled) resolution options were available.
    • The monitor displayed standard resolutions, including some labeled as "low resolution."


Tried using the Option (⌥) key to reveal hidden scaling options, but it didn’t work.


Third-Party Tools

BetterDisplay:

    • Installed BetterDisplay to force HiDPI resolutions.
    • Adjusted settings but found that it didn’t resolve the issue.
    • Removed BetterDisplay completely after it failed to deliver results.


SwitchResX:

    • Installed SwitchResX to create and apply custom HiDPI resolutions (e.g., 2560 x 1440 HiDPI).
    • Despite selecting HiDPI, the display appeared the same as non-HiDPI resolutions (no noticeable scaling or sharpness improvement).
    • Removed SwitchResX after extensive troubleshooting failed.


Manual Adjustments and Troubleshooting

Ran a Terminal command to enable HiDPI globally:


sudo defaults write /Library/Preferences/com.apple.windowserver.plist DisplayResolutionEnabled -bool true


Restarted the Mac, but scaling options didn’t appear.


Verified the display resolution and settings in System Information:

    • Confirmed the monitor was running at native 4K (3840 x 2160) but wasn’t using HiDPI.



3. Current Status

  • Issue Not Resolved: Despite trying macOS settings, Terminal commands, and third-party tools, the ASUS monitor is still not displaying HiDPI scaling options.



Key Points

  • Monitor: ASUS ProArt PA279CV (4K UHD, 60Hz, HDR).
  • Connection: USB-C directly to Mac Studio.
  • macOS Version: Sequoia (latest version).
  • Problem:
    • No HiDPI or "Looks like" scaling options in macOS System Settings > Displays.
    • Tools like BetterDisplay and SwitchResX failed to fix the issue.
    • Terminal commands to enable HiDPI scaling didn’t help.
    • Accessibility settings and non-HiDPI resolutions didn’t resolve the small text/UI problem.



Posted on Jan 19, 2025 3:44 AM

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Mac Studio M2 fails to show scaling options for ASUS ProArt PA279CV 

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