Windows 10: Night light feature unclear with cleartype enabled

Hi everyone,

I just upgraded my 2016 XPS 13 to a 2019 XPS 13 (7390 w/ 1080p touchscreen), and the text has issues when the windows night light/bluelight filter is on. The text appears to have splotches of blue/white (perhaps unfiltered) light around many of the characters. I've disabled adaptive/dynamic brightness in the bios, updated the Intel UHD drivers from Dell (from November '19), and even tried disabling Windows HDR. Issue seems to be related to cleartype - it's fine with it off.

Does anyone have any advice? It does not seem like a hardware issue, but it also seems crazy that an issue like this would not have been fixed. I'm wondering if a complete reformat would help, but this issue is out of the box.

Latest version of windows 10.

Pictures: https://imgur.com/a/vtVFx2e (it's more difficult to see in the picture, but those splotches of blue are very prevalent on the screen)

submitted by /u/nightwind_hawk
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:)

 

Why is the Night light feature malfuctioning?

Malfunction of the night light feature is a known bug in the v.1903 feature update. See the information from Microsoft

here. Look for the paragraph that starts "Gamma ramps, color profiles, and
night light settings do not apply in some cases." No fix issued yet and considering how many bigger issues Microsoft has to deal with, my guess is that a fix for night light is lower down on the list.

 

night light

You can find information on the Night Light feature, including how to turn it off, from the link below.

https://www.laptopmag.com/articles/enable-windo...

 

No Night Light

Hi allisonb1

Try these steps

Option 1. Reset Night Light-related Settings on Windows 10 Fall Creators Update

If you find the night light in the Action Center or the Settings is greyed out after the Windows 10 Fall Creators Update, you can fix it with the steps below:

Step 1. Use Windows shortcut keys Win + i to open Settings.

Step 2. Go to the Privacy menu.

Step 3. On the left side, choose the Location tab.

Step 4. Click the Change button under the Location for this device.

Step 5. Toggle the switch under the Location for this device to ON.

Step 6. Toggle the switch under the Location service to ON.

Step 7. Restart the computer.

Now check the Action Center or the Settings on your Windows 10 Fall Creators Update to see if the night light feature is available.

Option 2 . Modify Registry to Fix Night Light Not Working on Windows 10 Fall Creators Update

If the methods above didn't work, you may need to modify the registry to fix the greyed-out night light button or the night light not working issue. Note: Windows Registry is a vital database on Windows OS computer. Any misoperation will cause server system
problems, such as 100% disk usage issue, blue screen issue, endless reboot, etc. So it's important to backup registry before the changes.

Now let's kill the night light not working and release the pain:

Step 1. Use Windows shortcut keys Win + R to launch Run.

Step 2. Type into regedit.

Step 3. Hit the Enter key.

Step 4. Copy and paste the path into the address bar of the Registry Editor: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\CloudStore\Store\Cache\DefaultAccount

Step 5. Press the Enter key.

Step 6. Right-click the key $$windows.data.bluelightreduction.bluelightreductionstate under the DefaultAccount and select the Delete to remove it.

Step 7. Right-click the key $$windows.data.bluelightreduction.settings and select the Delete.

Step 8. Restart the computer.

Then you can go to the Action Center or the Windows Settings. The night light not working issue has been resolved now and the night light button is available.

Source:

https://www.tenforums.com/tutorials/73518-turn-...

https://www.drivethelife.com/windows-10/night-l...