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Night Light enabled only on one external monitor


Activated Night Light Applet from sunset to sunrise.

It finally works after uninstalling Brightness Control Applet, but only on the left screen of the dual monitor setup.

Anybody seen the same issue?



Seems to be a GNOME issue - https://bugzilla.gnome.org/show_bug.cgi?id=780167

Reading through on the linked issue https://gitlab.gnome.org/GNOME/gnome-settings-daemon/issues/6

it mentions killall gsd-color although the bug-report is closed saying that its fixed in mutter 3.28. So looks like there are more issues here with your setup - other people seem to be having the same issue on that report after the fix was released … so looks like it is not fully fixed.


thx for your help.

The links show exactly my problem.

Did a killall gsd-color and now Night Shift doesn’t work on both monitors.
Tried changing color profile settings, turning off and on monitors, but still no Night Shift function.

I guess we simply have to wait for a fix.