I was facing the problem of the night light not working on my laptop since I installed Ubuntu 20.04 but it gets resolved as soon as I restart my system. But now, when I started my system, the night light is working on the laptop screen but not on the joined display monitor, which was working fine since the time I am using joined displays which is more than 3 years.
Also, many people are facing this nightlight problem on their Ubuntu 20.04 and the only solution people are offering is rebooting the system, which solves the problem in many cases But rebooting the system every time I open it doesn't seem like a feasible solution. So is there any permanent solution to this problem?
