<![CDATA[F.lux does not work when screen wakes up]]>Below is my PC configuration:
Windows 10 v2004 OS Build: 19041.928
Intel i7-9700K 3.6GHz
32GB RAM
EVGA GEForce RTX 2080
Three monitors - ViewSonic VP2785-4K + VP2785-4K + VP2768-4K
f.lux v4.118

Issue:
In the power and sleep settings of Windows 10, i have setup the following:
Screens turn off after: 15 mins
Sleep: Never

The monitors turn off after 15 mins if not being used, as expected. In the night, when i wake the monitors using mouse or keyboard, f.lux doesn't work and the brightness is on full blast mode. I try to reset the display driver using the Ctrl+Win+Shift+B option, it resets f.lux correctly, sometimes it doesnt and sometimes only some of the monitors. If i exit f.lux and restart, it works fine.

This issue is consistent and repeatable.

If i don't turn off screen and use screensaver instead, there are no issues. I only see issue when i set the screen to turn off after some time. This is not a sleep mode issue as i don't set my PC to go to sleep.

Is there something in the monitor settings i need to change?
Is there a setting in windows i need to change?

What information would you need to debug this issue further?

Thanks in advance!

]]>https://forum.justgetflux.com/topic/7892/f-lux-does-not-work-when-screen-wakes-upRSS for NodeMon, 09 Mar 2026 21:44:34 GMTFri, 16 Apr 2021 19:17:39 GMT60<![CDATA[Reply to F.lux does not work when screen wakes up on Fri, 30 Apr 2021 12:42:17 GMT]]>I have the same problem.
I found that if I toggle the windows notification sidebar open and close it again, or minimize a browser window and maximize again, flux starts working.

I have flux set to disable on fullscreen apps, and I think it's reading the screen turn off as a full screen app for some reason. Going to test by turning off disable for full screen apps and see if the issue still occurs.

]]>https://forum.justgetflux.com/post/24353https://forum.justgetflux.com/post/24353Fri, 30 Apr 2021 12:42:17 GMT