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I prefer DP interfaces, but the lack of large monitors with high frequency made me buy 55" LG OLED55C11, supports 120hz refresh rate, but lack any DP. So I bought DP to HDMI adapters:

• https://www.amazon.com/CLUB-3D-CAC-1082-Active-Adapter/dp/B07HNTNTMR
• https://www.amazon.com/Club-3D-DisplayPort1-4-Adapter-CAC-1085/dp/B08BX49V5V for the second one I don't have USB-C port A power yet, waiting for additional pci-express card, it displays, but maybe lack enough power, don't know.

I use it with nvidia 1030 gt which has one do and one hdmi.

So when using the first dp-hdmi adapter, I can get only following 60hz instead of 120hz supported by the panel, I copy full output on dual screen display, the feature request is related to first DP-0 monitor, the secondary monitor connected via HDMI-0 is older PHilips which is limited to 60hz where I see only 30hz, so its also issue from my perspective. For the hdmi I use https://www.amazon.com/High-Speed-Cable-Style-20276/dp/B076G4MKQ1 cable.

[09:30:37] zangetsu@andromeda  $  ~  xrandr
Screen 0: minimum 8 x 8, current 7680 x 2160, maximum 32767 x 32767
DP-0 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis) 1600mm x 900mm
   3840x2160     60.00*+  59.94    50.00    29.97    25.00    23.98  
   4096x2160     59.94    50.00    29.97    25.00    24.00    23.98  
   2560x1440    120.00  
   1920x1080    119.88   100.00    60.00    59.94    50.00    29.97    25.00    23.98  
   1280x1024     60.02  
   1280x720      59.94    50.00  
   1152x864      60.00  
   1024x768      60.00  
   800x600       60.32  
   720x576       50.00  
   720x480       59.94  
   640x480       59.95    59.94    59.93  
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-0 connected 3840x2160+3840+0 (normal left inverted right x axis y axis) 953mm x 543mm
   3840x2160     29.98*+  29.97    25.00    23.98  
   2560x1440     59.95  
   1920x2160     59.99  
   1920x1080     60.00    59.94    50.00    60.00    50.04  
   1680x1050     59.95  
   1440x900      59.89  
   1280x1024     75.02    60.02  
   1280x960      60.00  
   1280x720      60.00    59.94    50.00  
   1024x768      75.03    70.07    60.00  
   800x600       75.00    72.19    60.32    56.25  
   720x576       50.00  
   720x480       59.94  
   640x480       75.00    72.81    59.94    59.93 

Is it possible to make xrandr work via these interface adapters to report correct values? I tried to enforce xrandr to manually configure 120hz at 4k, but it didn't work.