Gnome Night Light stays warmer after overnight suspend

[Maximilian bloch]

Gnome Night Light is scheduled from sunset to sunrise. In the evening, the screen color turns warmer as expected. Going to bed, the computer is put in suspend mode. The next day, after sunrise, the warm color is still on and stays on. Turning Gnome Night Light off (and on) does not help.

The Night Light settings clearly show the correct time of day in the slider in the blue color section.

* Ubuntu 17.04
* gnome-control-center:
  Installed: 1:3.24.0-0ubuntu1

[Veron Rado (junket)]

Hi I have the same bug.
Night Light stays orange after waking from sleep.
Turing it on or off etc. doesn't fix it.

Ubuntu 17.04
Kernel: 4.10.0-32-generic x86_64 (64 bit gcc: 6.3.0)
Gnome 3.24.2 (Gtk 3.22.11-0ubuntu3)
Graphics: Card: Advanced Micro Devices [AMD/ATI] Ellesmere [Radeon RX 470/480]
           Display Server: X.Org 1.19.3 driver
           GLX Renderer: Gallium 0.4 on AMD POLARIS10 (DRM 3.9.0 / 4.10.0-32-generic, LLVM 4.0.0)
           GLX Version: 3.0 Mesa 17.0.7 Direct Rendering: Yes

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Veron Rado (junket)]

Bug #1701772 seems to be a duplicate of this.

[Sebastien Bacher (seb128)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. The issue you are reporting is an upstream one and it would be nice if somebody having it could send the bug to the developers of the software by following the instructions at https://wiki.ubuntu.com/Bugs/Upstream/GNOME. If you have done so, please tell us the number of the upstream bug (or the link), so we can add a bugwatch that will inform us about its status. Thanks in advance.

[Veron Rado (junket)]

Reported upstream
https://bugzilla.gnome.org/show_bug.cgi?id=786569

[Sebastien Bacher (seb128)]

Thanks

[Veron Rado (junket)]

You're welcome.

[Michel Weimerskirch (michel-weimerskirch)]

For now, I use this workaround: Open Gnome "Settings", go to "Devices" -> "Colour" and toggle the colour management for the screen(s) off and on again.

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 17.04 (zesty) reached end-of-life on January 13, 2018.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in and change the bug status to Confirmed.

[Joe Stevenson-Pew (paganiniana10)]

Hi All,

I am experiencing this too.

After my monitors have lost the display port signal from my machine (either during suspension or blank screen), changing the nightlight settings is no longer possible and the last used setting is permanently engaged. Rebooting fixes the issue, however.

I am on Ubuntu 20.04.1 LTS and am using three monitors in series via MST.

Many thanks for any guidance.

[Daniel van Vugt (vanvugt)]

Please use bug 1894596 instead.