I am looking for software which helps me reduce the blue light on multiple screens on Ubuntu 20.04.4 LTS. I tried Redshift and Flux but unfortunately they don't have support for multiple screens.

  • does the "night mode" built in to Ubuntu work for multiple monitors?
    – Esther
    Apr 26, 2022 at 13:54
  • in my configuration where I used DisplayLink, it is not working and this is DisplayLink fault unfortunatelly May 4, 2022 at 9:18
  • That would be an important thing to add to your question, since normally most options should work fine.
    – Esther
    May 4, 2022 at 13:19
  • Unfortunately, it looks like this is a defect in the DisplayLink drivers, and is just not possible. As an alternative, you can try changing the RGB settings on your monitor, see here
    – Esther
    May 4, 2022 at 13:37
  • Yes, my apologize, I should have added it to the question but at the beginning I didn't realize that DisplayLink can cause the problem. Thanks for pointing out May 5, 2022 at 8:39


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