You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

vankalen8 Author

Level 1

8 points

Intermittent screen blank outs with LG 4k monitor

I am getting intermittent screen black outs on my LG 27UK850-W monitor. It is happening around 1-2 times per day where the monitor goes black for about 3 seconds before resuming like normal. I am running the latest version of Big Sur. I am connected via usb-c to usb-c and have tried using both ports but the issue exists on both. Sometimes the audio will no longer be working through the monitor after this happens and I am forced to restart the mac mini to get it to work again. I have not tried connecting through HDMI because I would like to save that port to use with a different device. I'm using the cable that came with the LG monitor but am considering buying an Apple usb-c to usb-c cable to see if that fixes the issue. I thought I'd ask here first to see if anyone has any suggestions. Thanks.

Posted on Dec 28, 2020 10:10 AM

Top-ranking reply

RUSD tech

Level 4

1,525 points

Posted on Dec 28, 2020 10:55 AM

I have found the cable that the manufacturer supplies is not very good.

My Samsung 4K had a poor cable included.

I ended up buying a much more expensive cable and do not have any issues with my M1 Mini.

View in context

Intermittent screen blank outs with LG 4k monitor

Similar questions