U2723QE, Ubuntu 24.04, not working, black screen

Device: Lenovo t16 gen 2 

I do not know if Ubuntu 24.04 needs a specific driver to function? They might on the Linux General board.

* Go to the U2723QE Drivers & Downloads page
* Under, "Operating system" drop down, I do not see Ubuntu 24.04

We do not sell Lenovo so you also need to tell us and our users what video out ports it has and how you are connecting to the U2723QE.

It works on my work laptop (dell latitude 9440, WIndows 11)

It doesn't work on my personal laptop (Ubuntu 24.04) with USB-C in 4k60hz.... it works in 4k30hz

Same issue with HDMI, works in 4K30hz

Lenovo T16 Gen 2 Ports: https://psref.lenovo.com/syspool/Sys/PDF/ThinkPad/ThinkPad_T16_Gen_2_AMD/ThinkPad_T16_Gen_2_AMD_Spec.pdf

I suspect this is a linux issue..... There is no  Ubuntu 24.04? You do not support it?

I tried:

xrandr --newmode "3840x2160x60.00" 712.75  3840 4160 4576 5312  2160 2163 2168 2237 -hsync +vsync
xrandr --addmode HDMI-1 "3840x2160x60.00"
xrandr --output DP-1 --mode 3840x2160x60.00
xrandr --addmode DP-1 "3840x2160x60.00"
xrandr --output DP-1 --mode 3840x2160x60.00

nothing... any help?

disregard xrandr.. It's using wayland

I made one change through the monitor menu by changing 'USB-C Prioritization' option from ''High Data Speed'  to "High Resolution". Now it works in 4k60hz, but what does it mean? Does it force 4K, and I can have lower than 60hz frame rate?

The online U2723QE User's Guide page 16 shows that the monitor is capable of 4K 3840x2160 30Hz =