Ideapad 5 14are05. No output on external monitor connected over the USB(C)-HDMI

I’m on Ideapad 5 14are05, Ryzen 5 4600U with integrated graphics. The laptop has no dGPU.
Kernel version is 5.9.3 and I’m using KDE desktop.

I’m unable to make my external monitor work over the USB©-HDMI connection. I didn’t try the HDMI-HDMI connection, because the goal is to have 1440p@144hz resolution and the laptop has HDMI 1.4, so it doesn’t provide such frequency.
It works on Windows.

Here some output from xrandr

Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384
eDP connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 309mm x 174mm
   1920x1080     60.05*+
   1680x1050     60.05  
   1280x1024     60.05  
   1440x900      60.05  
   1280x800      60.05  
   1280x720      60.05  
   1024x768      60.05  
   800x600       60.05  
   640x480       60.05  
HDMI-A-0 disconnected (normal left inverted right x axis y axis)
DisplayPort-0 disconnected (normal left inverted right x axis y axis)

Sorry, I’m pretty newbie with Linux and dunno what else info I should provide.