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Thread: Night Light not working

  1. #1
    Join Date
    Feb 2020
    Beans
    9

    Night Light not working

    Light Night simply is not working.

    All is set up, but the display remains white as snow.

    Any workaround? Thank you!
    Attached Images Attached Images

  2. #2
    Join Date
    May 2010
    Beans
    1,073

    Re: Night Light not working

    What is the output of
    Code:
    lsb_release -a; uname -a; apt-cache policy gnome-shell
    Thanks

  3. #3
    Join Date
    Jun 2007
    Location
    Arizona U.S.A.
    Beans
    4,876

    Re: Night Light not working

    For Sunset to Sunrise activation be sure Location Services is ON. Otherwise, Night Light wouldn't know the UTC times for Sunset and Sunrise.

  4. #4
    Join Date
    Apr 2007
    Beans
    2,902
    Distro
    Ubuntu

    Re: Night Light not working

    Location services must not be on for night light to work. The info is taken from the Region settings. Probably you should also provide info on your hardware,i.e., graphical card.

  5. #5
    Join Date
    Feb 2020
    Beans
    9

    Re: Night Light not working

    Quote Originally Posted by ActionParsnip View Post
    What is the output of
    Code:
    lsb_release -a; uname -a; apt-cache policy gnome-shell
    Thanks
    Thanks!

    This is the output:

    Code:
    No LSB modules are available.
    Distributor ID:    Ubuntu
    Description:    Ubuntu 20.04 LTS
    Release:    20.04
    Codename:    focal
    Linux buntu 5.4.0-52-generic #57-Ubuntu SMP Thu Oct 15 10:57:00 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
    gnome-shell:
      Installed: 3.36.4-1ubuntu1~20.04.2
      Candidate: 3.36.4-1ubuntu1~20.04.2
      Version table:
     *** 3.36.4-1ubuntu1~20.04.2 500
            500 http://pt.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
            500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages
            100 /var/lib/dpkg/status
         3.36.1-5ubuntu1 500
            500 http://pt.archive.ubuntu.com/ubuntu focal/main amd64 Packages

  6. #6
    Join Date
    Feb 2020
    Beans
    9

    Re: Night Light not working

    Quote Originally Posted by Dennis N View Post
    For Sunset to Sunrise activation be sure Location Services is ON. Otherwise, Night Light wouldn't know the UTC times for Sunset and Sunrise.
    Thanks! Actually, defining a particular schedule (instead of automatic sunset/sunrise local time), doesn't also help...

  7. #7
    Join Date
    May 2010
    Beans
    1,073

    Re: Night Light not working

    Are there any existing bugs for it reported on Launchpad.net?

  8. #8
    Join Date
    Feb 2020
    Beans
    9

    Re: Night Light not working

    Quote Originally Posted by ActionParsnip View Post
    Are there any existing bugs for it reported on Launchpad.net?
    I honestly don't know...

  9. #9
    Join Date
    Jun 2007
    Location
    Arizona U.S.A.
    Beans
    4,876

    Re: Night Light not working

    Quote Originally Posted by fpsdf2 View Post
    Thanks! Actually, defining a particular schedule (instead of automatic sunset/sunrise local time), doesn't also help...
    I tried the Night Light in Ubuntu 20.10 last night, and couldn't get it to come on in either mode (Sunrise to Sunset or Manual). Location Services setting had no effect in either mode.

    Update: This conclusion may not be correct, because the tested Ubuntu 20.10 was installed as a VM. Some further checking showed that the night light in a VM is actually being controlled by the host. If night light is switched OFF in the host, you can't activate it in the guest. If it's ON and active on the host, the guest display is also be affected. It is not independent. There is no 20.10 here that's a standard install to test. Night Light in sunset-to-sunrise mode set correct times immediately when Location Services was switched ON.
    Last edited by Dennis N; November 11th, 2020 at 03:06 PM.

  10. #10
    Join Date
    Feb 2020
    Beans
    9

    Re: Night Light not working

    Thank you! In this case, it's not a VM. It's a regular installation on a mid-2010 Macbook Pro.

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