Public bug reported:

Using the night light on both the built-in screen and an external
monitor (connected via VGA) in "Join Displays" mode, everything works
fine until the screen goes to sleep (aka "blank screen" in "Settings >
Power > Power Saving): the night light is still active on the built-in
screen but not on the external monitor anymore. I have to unplug and
plug back in the VGA for the night light to be restored on the external
monitor. Turning the night light on and off does not restore it on the
external monitor.

I have checked other bug reports related to night light, but couldn't
find a description of my issue.

gnome-control-center version: 1:3.28.2-0ubuntu0.18.04.2
gnome-shell version: 3.28.3-0ubuntu0.18.04.2

System details:

OS: Ubuntu 18.04.1 LTS x86_64
Host: N230WU
Kernel: 4.15.0-33-lowlatency
Uptime: 3 days, 1 hour, 12 mins
Packages: 2921
Shell: bash 4.4.19
Resolution: 1920x1080, 1920x1080
DE: Budgie
WM: Mutter(Budgie)
Theme: Adwaita [GTK2/3]
Icons: Adwaita [GTK2/3]
Terminal: tilix
CPU: Intel i7-8550U (8) @ 4.000GHz
GPU: Intel UHD Graphics 620
Memory: 4168MiB / 15918MiB

** Affects: gnome-control-center (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

  Using the night light on both the built-in screen and an external
  monitor (connected via VGA) in "Join Displays" mode, everything works
  fine until the screen goes to sleep (aka "blank screen" in "Settings >
  Power > Power Saving): the night light is still active on the built-in
  screen but not on the external monitor anymore. I have to unplug and
  plug back in the VGA for the night light to be restored on the external
  monitor. Turning the night light on and off does not restore it on the
  external monitor.
  
+ I have checked other bug reports related to night light, but couldn't
+ find a description of my issue.
+ 
  gnome-control-center version: 1:3.28.2-0ubuntu0.18.04.2
  gnome-shell version: 3.28.3-0ubuntu0.18.04.2
  
  System details:
  
- OS: Ubuntu 18.04.1 LTS x86_64 
- Host: N230WU 
- Kernel: 4.15.0-33-lowlatency 
- Uptime: 3 days, 1 hour, 12 mins 
- Packages: 2921 
- Shell: bash 4.4.19 
- Resolution: 1920x1080, 1920x1080 
- DE: Budgie 
- WM: Mutter(Budgie) 
- Theme: Adwaita [GTK2/3] 
- Icons: Adwaita [GTK2/3] 
- Terminal: tilix 
- CPU: Intel i7-8550U (8) @ 4.000GHz 
- GPU: Intel UHD Graphics 620 
+ OS: Ubuntu 18.04.1 LTS x86_64
+ Host: N230WU
+ Kernel: 4.15.0-33-lowlatency
+ Uptime: 3 days, 1 hour, 12 mins
+ Packages: 2921
+ Shell: bash 4.4.19
+ Resolution: 1920x1080, 1920x1080
+ DE: Budgie
+ WM: Mutter(Budgie)
+ Theme: Adwaita [GTK2/3]
+ Icons: Adwaita [GTK2/3]
+ Terminal: tilix
+ CPU: Intel i7-8550U (8) @ 4.000GHz
+ GPU: Intel UHD Graphics 620
  Memory: 4168MiB / 15918MiB

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-control-center in Ubuntu.
https://bugs.launchpad.net/bugs/1791659

Title:
  night light is off on external monitor after screen goes to sleep

Status in gnome-control-center package in Ubuntu:
  New

Bug description:
  Using the night light on both the built-in screen and an external
  monitor (connected via VGA) in "Join Displays" mode, everything works
  fine until the screen goes to sleep (aka "blank screen" in "Settings >
  Power > Power Saving): the night light is still active on the built-in
  screen but not on the external monitor anymore. I have to unplug and
  plug back in the VGA for the night light to be restored on the
  external monitor. Turning the night light on and off does not restore
  it on the external monitor.

  I have checked other bug reports related to night light, but couldn't
  find a description of my issue.

  gnome-control-center version: 1:3.28.2-0ubuntu0.18.04.2
  gnome-shell version: 3.28.3-0ubuntu0.18.04.2

  System details:

  OS: Ubuntu 18.04.1 LTS x86_64
  Host: N230WU
  Kernel: 4.15.0-33-lowlatency
  Uptime: 3 days, 1 hour, 12 mins
  Packages: 2921
  Shell: bash 4.4.19
  Resolution: 1920x1080, 1920x1080
  DE: Budgie
  WM: Mutter(Budgie)
  Theme: Adwaita [GTK2/3]
  Icons: Adwaita [GTK2/3]
  Terminal: tilix
  CPU: Intel i7-8550U (8) @ 4.000GHz
  GPU: Intel UHD Graphics 620
  Memory: 4168MiB / 15918MiB

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1791659/+subscriptions

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