Ubuntu
tzdata package

Night light time

Asked by Anıl

Night light turns on 1 hour before the expected sunset.

timedatectl status
                      Local time: Prş 2019-10-31 17:28:19 +03
                  Universal time: Prş 2019-10-31 14:28:19 UTC
                        RTC time: Prş 2019-10-31 14:28:19
                       Time zone: Europe/Istanbul (+03, +0300)
       System clock synchronized: yes
systemd-timesyncd.service active: yes
                 RTC in local TZ: no

Question information

Language:
English Edit question
Status:
Answered
For:
Ubuntu tzdata Edit question
Assignee:
No assignee Edit question
Last query:
Last reply:
Revision history for this message
Manfred Hampl (m-hampl) said : 		#1

Please provide more details:

tzdata is responsible for the clock settings, but has nothing to do with "night light".
Which "light light" are you taking about?

Revision history for this message
Anıl (anlyldz27) said : 		#2

Yes maybe asking wrong section. Sorry for that. Im asking in Display setting Night Light or Mode. Its not response correct sunset/sunrise time.

Revision history for this message
Manfred Hampl (m-hampl) said : 		#3

What is the output of the commands

uname -a
lsb_release -crid
gsettings list-recursively org.gnome.settings-daemon.plugins.color

Revision history for this message
Anıl (anlyldz27) said : 		#4

uname -a
5.0.0-32-generic #34~18.04.2-Ubuntu SMP Thu Oct 10 10:36:02 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

$ lsb_release -crid
Distributor ID: Ubuntu
Description: Ubuntu 18.04.3 LTS
Release: 18.04

$ gsettings list-recursively org.gnome.settings-daemon.plugins.color
org.gnome.settings-daemon.plugins.color night-light-schedule-automatic true
org.gnome.settings-daemon.plugins.color priority 0
org.gnome.settings-daemon.plugins.color recalibrate-display-threshold uint32 0
org.gnome.settings-daemon.plugins.color night-light-last-coordinates (41.018000000000001, 28.93)
org.gnome.settings-daemon.plugins.color night-light-enabled true
org.gnome.settings-daemon.plugins.color night-light-schedule-from 18.0
org.gnome.settings-daemon.plugins.color night-light-schedule-to 6.0
org.gnome.settings-daemon.plugins.color night-light-temperature uint32 4000
org.gnome.settings-daemon.plugins.color recalibrate-printer-threshold uint32 0
org.gnome.settings-daemon.plugins.color active true

Revision history for this message
Manfred Hampl (m-hampl) said : 		#5

The settings look correct (coordinates are near Topkapi in Istanbul).

https://bugzilla.gnome.org/show_bug.cgi?id=784826#c2 (comment 2) explains that the gradual transition from day settings to night settings starts one hour before sunset and continues until it is complete at the calculated sunset time.
In the morning the transition also starts one hour before sunrise.

Can you help with this problem?

Provide an answer of your own, or ask Anıl for more information if necessary.

To post a message you must log in.