LG Monitor Flashing and burning in when connected to my MacBook

Hey, super weird question for you guys!

I have a LG 27GL650F-B 27 Inch UltraGear Full HD IPS Gaming Monitor with G-Sync® Compatible, Adaptive-Sync.

(I know, it's a long name)

Any who, when it's connected to my Gaming Windows PC, I have 0 issues what so ever.

But the problem is when it gets connected to my 14" 2021 MacBook Pro.

For some reason when displaying certain images (mainly ones with darker scenes) it starts to flicker, and I can see lines.

Sometimes, or bad conditions, it will even start flashing its brightness and start to burn in the image until 5-10 minutes when it will go away.

I have tried using my MacBooks HDMI port and an adapter, and both seem to have this issue.

I have done some basic troubleshooting like restarting my Mac, reseting my monitor and just leaving it be for a week or so, and all failed to fix the issue.


Sorry if this question seems like less of an Apple one, and more of a LG support one.

But honestly I have no idea who to ask!


Thanks very much, please get back when you get a moment!

(I asked this same question with the Apple displays community, but they said to ask you guys)

MacBook Pro 14″, macOS 12.4

Posted on Jun 28, 2022 8:50 AM

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3 replies

Jul 14, 2022 12:54 PM in response to GamingWithSlinky

I too have this exact issue on my 2021 14" MBP. I have two of this model monitor, manufactured a year apart and with different firmware versions. Different images trigger the issue on different monitors. Prior to moving to a 2021 14" M1 MBP, I was on a 2019 16" Intel MBP and never once had any issues. I also have zero issues driving these displays on my gaming rig dual booting Windows and Linux. I have tried, in Mac OS, applying different color profiles but that just changes which images trigger the issue. I have tried different HDMI cables, no change.

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LG Monitor Flashing and burning in when connected to my MacBook

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