Individual screen scaling Xorg
 

Hello,

It looks like your driver doesn't support individual screen scaling in Xorg.
For example this command is not working when my two external monitors (DVI-I-1-1 & DVI-I-2-2) are connected through DisplayLink

xrandr --dpi 157 --fb 7680x4320 \
--output eDP-1 --mode 3840x2160 --scale 0.5x0.5 --pos 3840x1620 \
--output DVI-I-1-1 --mode 3840x2160 --pos 0x0\
--output DVI-I-2-2 --mode 1920x1080 --scale 1.5x1.5 --pos 3840x0

but moving DVI-I-2-2 monitor to direct HDMI port on the laptop works.
xrandr --dpi 157 --fb 7680x4320 \
--output eDP-1 --mode 3840x2160 --scale 0.5x0.5 --pos 3840x1620 \
--output DVI-I-1-1 --mode 3840x2160 --pos 0x0\
--output HDMI-1 --mode 1920x1080 --scale 1.5x1.5 --pos 3840x0

Using displaylink-driver-5.4.0-55.153 on Ubuntu 20.04
Kernel 5.8.0-55-generic
xrandr program version 1.5.0
Server reports RandR version 1.6
xserver-xorg-core 2:1.20.9-2ubuntu1.2~20.04.2

I think I saw this written somewhere on the DisplayLink website, that individual screen scaling does work only on Wayland.