You have been subscribed to a public bug:
When I turn on my laptop while it is connected to an external screen (my
display settings are such that only the external screen is used while it
is connected) and later disconnect it, Night Light does not work on the
laptop screen (it did on the external screen). I have Night Light on
"Manual Schedule" from 00:00 to 23:59 so it would always be on. Turning
the Night Light setting off and on again does not help.
After restarting the laptop while it is not connected to the external
screen, Night Light will work as expected.
ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: gnome-control-center 1:41.4-1ubuntu13
ProcVersionSignature: Ubuntu 5.15.0-27.28-generic 5.15.30
Uname: Linux 5.15.0-27-generic x86_64
ApportVersion: 2.20.11-0ubuntu82
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Mon May 9 21:27:17 2022
ExecutablePath: /usr/bin/gnome-control-center
InstallationDate: Installed on 2022-01-09 (120 days ago)
InstallationMedia: Ubuntu 21.10 "Impish Indri" - Release amd64 (20211012)
SourcePackage: gnome-control-center
UpgradeStatus: Upgraded to jammy on 2022-04-30 (9 days ago)
** Affects: gnome-shell (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug jammy wayland-session
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Night light does not work on laptop screen when disconnecting from external
screen
https://bugs.launchpad.net/bugs/1972720
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