Dell UP2715K (5K Monitor) Running on 1920x1080

[Tazovsky]

Originally Posted by yigitkonur

Hi there, I'm using Dell D6000 with latest firmware (19) but my monitor stop to display 5K mode. You can see display modes in here: https://cln.sh/32Ralj

I'm using 1.3.0 drivers. 2x DP for UP2715K and 1x HDMI for P2418D. The ones that connected to HDMI works perfectly fine but 5K is showing screen like this: https://cln.sh/Nvn8D7

It even sizes less than P2418D as this one is 2K monitor only. How can I fix this problem?

This is screenshot from system report: https://cln.sh/3QICuK (it seems like it diagnose my monitor as 4K monitor, instead of 5K)

Did you update macOS to 11.3? If yes, then there is a bug and 1080p max you can have until it is fixed.