Score:1

Night light turn off automatically after few seconds

ie flag

In Ubuntu 20.04.3 LTS kernel version 5.16.3-051603-generic. When I turn on night light it gets disabled automatically after few seconds.

Like this: Error video

What is the cause of problem? Is there anything I can do?

Any help will be helpful.

Thanks.

us flag
Please post the solution as an answer instead of editing the question.
ie flag
Ok, Thanks for pointing out I'm new here.
Score:2
pe flag

The 'Sunrise to Sunset' option was causing this for me.

In a similar vein to @elgeschickto's answer, one solution is to go to Settings -> Displays -> Night Light and change the schedule to 'Manual Schedule' and then set appropriate times.

Score:1
ro flag

Another reason may be that location services is turned off.

Apparently, in that case, the system gets the time for sunrise and sunset wrong.

I just experienced this: it was well after sunset, I toggled Night Light on. Nothing happened. Schedule was set to "Sunset to Sunrise", as desired. Then I moved the Color Temperature slider and the screen's color immediately changed. But after a few seconds, it just changed back.

I didn't have Redshift installed in the first place.

But when I enabled Location Services (Settings → Privacy → Location Services) the Night Light kicked in almost immediately. And stayed on.

So, this seems to be another possible cause for the symptom described in the original post.

Score:1
ie flag

I got it. Thanks to this answer - Night light and Redshift don't work.

I first uninstalled redshift with the command

sudo apt-get remove redshift then

Automatic night light does not seems to work. So, I changed to manual timings and it worked now.

mangohost

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