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M1 Mac mini not showing full display of 5120x1440 60hz for Samsung 49inch CRG9

M1 Mac mini is only showing 3840x1080 resolution on my CRG9 ultra wide monitor. I saw some forums stating that Big Sur 11.2 has solved the issue but that's not the case for me as I had Big Sur 11.4.

Later I upgraded to 11.5 Beta and tried with SwitchResX as well and that too is not showing the option for 5120x1440.

Can you please help?

Thanks.

Posted on Jun 21, 2021 8:11 PM

Top-ranking reply

den.thed

Level 10

82,036 points

Posted on Jun 21, 2021 8:35 PM

The 2020 M1 Mac Mini's HDMI port only supports up to 4K Displays from the HDMI port.

https://support.apple.com/guide/mac-mini/connect-a-display-apd8e4fbbb97/mac

https://www.apple.com/mac-mini/specs/

I don't have that display to test, but I'm pretty sure that you are going to need either a high-res. USB-C to HDMI or USB-C to DisplayPort cable to get higher resolutions with that display.

https://image-us.samsung.com/SamsungUS/samsungbusiness/pdfs/MON-CRG90DSHT-JUL19T-Final-7-14-19.pdf

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M1 Mac mini not showing full display of 5120x1440 60hz for Samsung 49inch CRG9

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