How to enable night light feature on Ubuntu

Enabling the night light feature can help reduce eye strain, particularly during the night or in low-light environments. This feature reduces the amount of blue light emitted by the screen, which is believed to interfere with sleep patterns if one is exposed to it for prolonged periods before bedtime.

Most recent versions of Ubuntu come with a built-in Night Light feature. This feature can be found in the Settings application under the Display section. Once activated, Night Light can be set to automatically adjust the screen color according to sunset and sunrise or at custom times set by the user.

1. Open Settings application from the application menu or dock.
2. Navigate to the Display section in the left sidebar.
3. Click on the Night Light tab.
4. Toggle the switch to enable Night Light.
5. Adjust the color temperature according to your preference using the slider.
6. Choose the schedule you want for the night light feature:
7. Select Sunset to Sunrise for automatic adjustments.
8. Select Manual to set a custom start and end time for the night light.
9. Close the Settings application once you've configured your preferences. Your night light settings will now be applied based on the schedule or times you've chosen.