Apple M1 - LG 4k monitor, not showing 2560 x 1440 resolution?

[jzzz]

Originally Posted by jzzz

I'm facing a similar issue but my same LG model monitor received no signal via a hdmi-to-hdmi connection with my targus docking station. The same setup works on my Dell monitors and I can connect my LG monitor with HDMI cables to my Nintendo switch (which kind of means the port is working). Any comments? Thanks!

(I don't have a HDMI to DP cable to test with.)

Update:

I was able to use the LG monitor with 1280x720. No signal at all if I choose the other three options (3840x2160, 1920x1080, nor 1600x900). I am using a M1 Macbook Air with OS 11.1, targus dock310, lg32uk50t, connection hdmi to hdmi.

Any ideas on how to make it display better?

Thanks!