Toggling night light and adjusting color temperature has no effect on visual.Setting the night light to Manual schedule and playing with the times did not help.
Similar to this question but for Ubuntu 22.04 Night Light not working in Ubuntu 20.04I've tried their suggested answers with no luck:
- restarting the PC
sudo apt-get install --reinstall gnome-control-centerthenrestarting PC.
Gnome version: 42.1Machine: Dell XPS 17 9720