Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: gnome-control-center (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1998344
Title:
Night Light doesn't alter screen display colour temperature
Status in gnome-control-center package in Ubuntu:
Confirmed
Bug description:
Night light turns on and off correctly (manually and automatically at
sunset/sunrise), but it has no effect on screen colour temperature. Altering
the colour temperature slider makes no difference. Changing display temperature
in dconf-editor didn't have any effect either.
Behaviour is the same in Wayland and Xorg sessions.
(Note that 22.10 is the first ubuntu release where graphics have worked at
all with this machine
(Intel® Core™ i3-10100 CPU Intel CometLake-S GT2 [UHD Graphics 630])
With kernels before 5.19 the i915 driver module wouldn't load.)
I have raised the issue on ubuntu forums,
https://ubuntuforums.org/showthread.php?t=2481261 with no indication
of it being a problem also reported by other 22.10 users, so it may be
specific to this CPU.
It also appears to be specific to gnome desktop. I have tried a
Kubuntu liveUSB and night light worked correctly.
ProblemType: Bug
DistroRelease: Ubuntu 22.10
Package: gnome-control-center 1:43.0-1ubuntu2
ProcVersionSignature: Ubuntu 5.19.0-23.24-generic 5.19.7
Uname: Linux 5.19.0-23-generic x86_64
ApportVersion: 2.23.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Wed Nov 30 14:47:25 2022
ExecutablePath: /usr/bin/gnome-control-center
InstallationDate: Installed on 2022-10-27 (33 days ago)
InstallationMedia: Ubuntu 22.10 "Kinetic Kudu" - Release amd64 (20221020)
ProcEnviron:
LANG=en_GB.UTF-8
LANGUAGE=en_GB:en
PATH=(custom, no user)
SHELL=/bin/bash
XDG_RUNTIME_DIR=<set>
SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)
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