Ah that seems similar to
xrandr --newmode "3000x2000_60.00" 513.44 3000 3240 3568 4136 2000 2001 2004 2069 -HSync +Vsync
xrandr --addmode eDP-1 "3000x2000_60.00"
as suggested in [RESPONDED] Using elementary OS on the Framework Laptop
Ah that seems similar to
xrandr --newmode "3000x2000_60.00" 513.44 3000 3240 3568 4136 2000 2001 2004 2069 -HSync +Vsync
xrandr --addmode eDP-1 "3000x2000_60.00"
as suggested in [RESPONDED] Using elementary OS on the Framework Laptop