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RandomDon Author

Level 1

8 points

System Preferences - Displays - underscan

Configuration - new Mac mini 2018 running up-to-date Catalina with HDMI connection to Hitachi HDTV for a display.

In System Preferences - Displays, I set the underscan to the first hash mark in order to pull the top menu bar down slightly. When I power back up the next time, the display is not underscanned. When I return to System Preferences - Displays, the setting is still there. When I adjust it to off, the display does not change. When I adjust it back to the first hash mark, the display underscans as expected.

Any advice about how to make the setting persist?

Mac mini, OS X 10.11

Posted on May 6, 2020 10:59 AM

Top-ranking reply

Malcolm J. Rayfield

Level 7

23,059 points

Posted on May 6, 2020 8:54 PM

Have you checked the setting on the HDTV to see if it can run without underscan? Look for Full Screen, Pixel-to-Pixel...

Underscan require image scaling, which can reduce sharpness.

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System Preferences - Displays - underscan

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