Mac mini LG Ultrafine - screen flickers

I have the Mac mini and the LG Ultrafine (27"). Every 30 mins or so the screen goes black for a 2 or 3 seconds then comes back. I was hoping that the latest Mojave update would have fixed this issue. But the issues remains. Does anybody know a way to fix this. It seems to me to be software related, as a restart will sometimes clear the issue for a while.


It is irritating to spend so much money, only to have it virtually unusable.


I am running Mac mini (2018) 3.2 Ghz, 32 GB RAM running Mojave 10.14.4


Thanks for any help or insight.

Mac mini, macOS 10.14

Posted on Apr 2, 2019 6:56 AM

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Posted on Apr 2, 2019 5:40 PM

You don’t say how the display is connected to the Mac Mini?


If it is HDMI to HDMI, then I would first try a different or better HDMI cable.

Or... optionally, depending on what other inputs the display has? I would switch it to a more stable connection like USB-C to Display Port or USB-C to USB-C.


for more info, see > Use external monitors with your Mac - Apple Support

3 replies
Question marked as Top-ranking reply

Apr 2, 2019 5:40 PM in response to Nick Syrett

You don’t say how the display is connected to the Mac Mini?


If it is HDMI to HDMI, then I would first try a different or better HDMI cable.

Or... optionally, depending on what other inputs the display has? I would switch it to a more stable connection like USB-C to Display Port or USB-C to USB-C.


for more info, see > Use external monitors with your Mac - Apple Support

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Mac mini LG Ultrafine - screen flickers

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