@lech7 yes, it is a brightness backoff, so f.lux will not override other controllers' brightness settings.

However, f.lux will use its color settings all the time. There are some adjustments for how we map screen colors to hue colors, however.

@herf Backoff doesn't seem to be working for me at all. I'm in 4.131, I have Backoff checked, and when I use my hue app to change the color, the color changes right back to the f.lux controlled color a minute later. Pausing f.lux also doesn't pause the hue lights control.

@herf I'm having the same issue, with this driver info:

DisplayLink 11.2.3146.0: DisplayLink USB Device (20230926)
DisplayLink 11.2.3146.0: DisplayLink USB Device (20230926)
DisplayLink 11.2.3146.0: DisplayLink USB Device (20230926)
DisplayLink 11.2.3146.0: DisplayLink USB Device (20230926)
Advanced Micro Devices, Inc. 31.0.21024.5: AMD Radeon (TM) Graphics (20230718)

Generic PnP Monitor, 527 x 296mm, built 2022
Chromaticities:
R=0.652344 0.335938
G=0.321289 0.610352
B=0.153320 0.060547
W=0.313477 0.329102
sRGB gamut: 86%, AdobeRGB gamut: 60%

Generic PnP Monitor, 345 x 215mm, built 2021
Chromaticities:
R=0.594727 0.370117
G=0.363281 0.552734
B=0.155273 0.102539
W=0.313477 0.329102
sRGB gamut: 51%, AdobeRGB gamut: 34%

Generic PnP Monitor, 527 x 296mm, built 2022
Chromaticities:
R=0.652344 0.335938
G=0.321289 0.610352
B=0.153320 0.060547
W=0.313477 0.329102
sRGB gamut: 86%, AdobeRGB gamut: 60%

Unlimited gamma ramp=1, Internal ramp=0
Monitor 1 on AMD Radeon (TM) Graphics
Has VCGT profile=0, Gamma Ramp works=1
Monitor 2 on DisplayLink USB Device
Has VCGT profile=0, Gamma Ramp works=0
Monitor 3 on DisplayLink USB Device
Has VCGT profile=0, Gamma Ramp works=0

Windows Build: 19045.3930

On my laptop's built-in display, the extra effects work, but not on the external monitors.

@lux1782 I think screens should dim quite a bit before bed, but also the ambient light in the room you're in matters a lot as well. So I would try to have some scheduled dimming in your room, and then dim the screen to keep it readable, but not bright. The color changes we do with f.lux account for another 3-10x in "equivalent dimming" but you should do both.

@GoldenRelik you can post "f.lux options > driver info" and maybe email us a video from your phone? (support at justgetflux.com)

hi sorry, about half the posts here are spam so we had to do the manual filter. it's mainly me - will try to keep up to date.

@fluxie can you email us your profile (ICM)? support at justgetflux.com

@fluxie it is the main download now, we are slowly rolling the update.

Once you remove it, your laptop should go back to the regular color settings.

Same here~

@NinetyDruid5 if you post f.lux options > driver info sometimes we can help. This usually happens when one of your monitors is connected with an older USB adapter, but for certain kinds (DisplayLink) we can help get it working.

@herf that didn't work. I don't use usb but thunderbolt.
However, an hour ago, I updated f.lux to version 4.131 (Jan 2024) and the issue is gone! I cross my fingers.

@RVogt222 if the location is right, you should check your timezone/system clock here:
https://justgetflux.com/timesync.html

Sometimes the timezone gets set to the wrong one, and so the displayed time "looks" right but it isn't really.

@Artsem-K

this can be done by setting the "late" slider all the way to the right, or by choosing the "classic f.lux" preset. only about 10-15% of Windows machines have a light sensor... if you mean to network the smartphone so it can be used as a "nearby" light sensor? then not really, it is too difficult to do things in the background on most of them