linux - Why Night Light not working in Ubuntu 20.04?

Question

When I try to set it up the Night Light, nothing happens. Has anybody met such problem? Please, help with solving.

Before I restarted my laptop it was working normally. But, after restarting, even I couldn't open the settings display. Then I tried these commands: "sudo apt-get update sudo apt-get install --reinstall gnome-control-center", after what display settings opened. Unfortunately, there is no response to my setting from display.

I tried to find the answer in askubuntu.com, but they're directing me to ask from ubuntu server: "apport-collect 1880739"

P.S. Before restarting I had uninstalled MySql with the following commands: "sudo systemctl stop mysql sudo apt-get purge mysql-server mysql-client mysql-common mysql-server-core-* mysql-client-core-* sudo rm -rf /etc/mysql /var/lib/mysql" Might it be the cause of the problem?

标签： linuxsettingsubuntu-20.04