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elpedro1978 Author

Level 1

21 points

Mac Mini 2020 Display settings resetting on LG TV

I have a Mac Mini (2020) connected up to an LG TV via HDMI. I've configured the Display settings to have the Mac screen fit perfectly on the TV screen. However, whenever I reboot the Mac the Display settings seem to be reset, until I go into the Display Settings window and click on the Underscan slider. It then corrects itself. This is quite annoying to have to do this every time I reboot (it works fine if just using Sleep). I've tried ensuring the aspect ratio on the TV is set as 16:9 rather than 'Automatic', as found on another forum this was a suggested solution (it didn't work).

Has anyone experienced something similar?

Mac mini, macOS 10.15

Posted on May 11, 2020 5:25 AM

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Best reply

Level 9

77,488 points

Posted on May 11, 2020 7:31 AM

Reset the PRAM, as per > Reset NVRAM or PRAM on your Mac - Apple Support

If that doesn't help, you may want to move it to one of the Mac Mini's Thunderbolt 3 (USB-C) ports.

USB-C Digital AV Multiport Adapter - Apple

Belkin USB-C to HDMI Adapter - Apple

for reference, see > Connect multiple displays to your Mac mini (2018) - Apple Support

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2 replies

Best reply

Level 9

77,488 points

May 11, 2020 7:31 AM in response to elpedro1978

Reset the PRAM, as per > Reset NVRAM or PRAM on your Mac - Apple Support

If that doesn't help, you may want to move it to one of the Mac Mini's Thunderbolt 3 (USB-C) ports.

USB-C Digital AV Multiport Adapter - Apple

Belkin USB-C to HDMI Adapter - Apple

for reference, see > Connect multiple displays to your Mac mini (2018) - Apple Support

Reply

May 11, 2020 5:08 PM in response to elpedro1978

See if you can change the settings on the LG TV so that you don't need underscan. Look for picture size settings such as: Full Screen, Pixel-to-Pixel ...

Underscan can often make the image a bit blurred.

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Mac Mini 2020 Display settings resetting on LG TV

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