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I have an external monitor that supports touch input. It's connected through HDMI and USB to my new MacBook Pro. When I touch the screen, the input is executed on the main display (so the internal one) instead of on the touchscreen itself (the external one).

I had a similar problem with my Windows laptop, but there is a setting for which screen the touch input is executed on. I couldn't find anything similar for Mac. Anybody got any tips?

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  • What is your External monitor model ? Commented Sep 23, 2019 at 16:19
  • It's a no-name local brand. Under Mac OS it registers as "RTK FHD HDR". Commented Sep 25, 2019 at 8:38
  • I have the electriQ eiQ-15UHDPMT and have the same problem. Commented Jan 9, 2023 at 14:44

1 Answer 1

Reset to default
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If you're still trying to troubleshoot this 5 years later, I have an answer.

The touch function seems to work on whatever display you set as your main display. When I go into settings > displays and set my external touch monitor as "main display", the touch function works on that monitor.

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  • I'm not using Mac anymore, so I'm not actively looking for an answer - but nevertheless, thank you very much! I hope this helps whoever stumbles upon this. Commented Jun 26, 2024 at 12:07
  • That didn’t work for me. I have to move the mouse cursor over to the touch screen, then everything works. I am on macOS Sequoia 15.5 (24F74). Commented Aug 5 at 15:59

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