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SuperONEONE Author

Level 1

5 points

Samsung 31.5" LED U32J590 4k Monitor not displaying 3820 x 2160 @ 60Hz... getting only 30Hz

I just recently purchased an Apple Mac Mini M1(2020) and connected it to a Samsung 31.5" 4k LED Monitor Model U32J590.

I used the HDMI cable that came with the monitor. Connected Apple Mac Mini HDMI port to Monitor HDMI Port 1. About this MAC - Displays --> shows 31.5-inch 3840 x 2160. Under System Preferences - Displays - Refresh Rate --> shows maximum 30 Hertz. Besides not gettin 60 Hertz, the monitor would flicker once every 10 seconds or so.

It turns out monitor's HDMI port 1 is capable of only 30 Hertz. I connected the Apple Mac Mini HDMI port to Monitor HDMI Port 2 and the Refresh Rate is at 60 Hertz and the flicker issue is no longer present.

I hope this will help someone with this issue. It took me a few hours to figure this out. I am not sure why HDMI Port 1 would only support 30 Hertz and HDMI Port 2 can support 60 Hertz. If anyone knows why, feel to to let me know.

Cheers!

SuperONEONE

Posted on Jan 30, 2022 6:38 AM

Top-ranking reply

den.thed

Level 10

82,504 points

Posted on Jan 30, 2022 8:15 AM

Thanks for sharing that tip.

If you have other issues, replace the LG HDMI cable with a Premium Certified HDMI cable and/or use a USB-C to DisplayPort cable if the LG also supports DisplayPort input.

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Samsung 31.5" LED U32J590 4k Monitor not displaying 3820 x 2160 @ 60Hz... getting only 30Hz

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