3840 x 1080 resolution flickers with LG 49WL95C-W monitor

Question

3840 x 1080 resolution flickers with LG 49WL95C-W monitor

I've an issue with my LG HDR DQHD 49WL95C-W display and my mac pro 2020 connected with usb-c. It works quite well, unless i'm changing the resolution to 3840 x 1080, then it flickers sometimes, most notably when i'm using videos. Higher (5120 x 1440) or lower (2560 x 720) resolutions are working well with no flickering. Unfortunately the medium resolution is the best to work with.

What could be the problem? Could it be a driver issue?

Mac Pro, macOS 10.15

Posted on Jun 29, 2020 2:09 AM

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Answer 1

Jun 29, 2020 12:33 PM in response to Tobivonkenobi

That resolution appear to be 3/4 the size of the "natural" resolution of the display. I expect some rather amazing computations are being done, either in the computer or the display to accomplish that re-sizing.

If it flickers, I suggest you run your Videos in a window that is sized to the resolution of your Videos, leaving the display itself at the "natural" resolution of the display.

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Answer 2

Jun 30, 2020 2:18 AM in response to Grant Bennet-Alder

The flickering does not appear in the videos but at the edges of the screen (for example at the menu bar), so its more any movement on the screen that reinforces it.

Who is responsible for that resizing computations, the operating system or the monitor manufacturer?

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Answer 3

Jun 30, 2020 7:22 AM in response to Tobivonkenobi

Tobivonkenobi wrote:

Who is responsible for that resizing computations, the operating system or the monitor manufacturer?

The display is a slave. It displays exactly what the computer tells it to display.

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3840 x 1080 resolution flickers with LG 49WL95C-W monitor

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