@adityapstar

Ok so I know this post is over a year and a half old, but I thought I'd share what resolved this for me for any newcomers facing this issue.

All I did was change which monitor was classed as the main monitor in the windows settings.

Settings ---> Display ---> Multiple displays ---> Tick "Make this main display" on the monitor not currently set as this ---> Re-tick your actual main monitor.

This is what resolved it for me, on a windows 11 machine without giving f.lux admin control as it's a work PC. I was also running this via a daisy chained 3 monitor set up connected to the laptop via a single USB-C cable.

My Driver Info below incase anyone needs that for reference:

Intel Corporation 31.0.101.5333: Intel(R) Iris(R) Xe Graphics (20240221)

Dell P2425HE(DisplayPort), 527 x 296mm, built 2024
Chromaticities:
R=0.665039 0.324219
G=0.311523 0.628906
B=0.142578 0.061523
W=0.313477 0.329102
sRGB gamut: 100%, AdobeRGB gamut: 70%

Generic PnP Monitor, 293 x 165mm, built 2019
Chromaticities:
R=0.644531 0.338867
G=0.324219 0.613281
B=0.155273 0.048828
W=0.313477 0.329102
sRGB gamut: 85%, AdobeRGB gamut: 60%

Dell P2425HE(USB Type_C), 527 x 296mm, built 2024
Chromaticities:
R=0.665039 0.324219
G=0.311523 0.628906
B=0.142578 0.061523
W=0.313477 0.329102
sRGB gamut: 100%, AdobeRGB gamut: 70%

Dell P2425HE(DisplayPort), 527 x 296mm, built 2024
Chromaticities:
R=0.665039 0.324219
G=0.311523 0.628906
B=0.142578 0.061523
W=0.313477 0.329102
sRGB gamut: 100%, AdobeRGB gamut: 70%

Unlimited gamma ramp=1, Internal ramp=1
Monitor 1 on Intel(R) Iris(R) Xe Graphics
Has VCGT profile=0, Gamma Ramp works=1
Monitor 2 on Intel(R) Iris(R) Xe Graphics
Has VCGT profile=0, Gamma Ramp works=1
Monitor 3 on Intel(R) Iris(R) Xe Graphics
Has VCGT profile=0, Gamma Ramp works=1

Windows Build: 22631.3880

@herf i cant send screenshot but in win10 i can change intensity, if you right click on the night mode panel and go to settings, there will be a setting for the night light parameter right under the switch on and switch on night mode button.

@Jokester2101 You have the "hotkeys" checkbox off, so it should not affect the Windows key.

The only place we register a hotkey is related to this, and if f.lux is relaunched it does not even call the windows code to ask for the hotkey. It's specifically registering Windows+End.

@hehee we will look into it - this means that f.lux saw two different states in the hub, and to avoid a "race condition" where we fight another app, we are waiting for it to be stable before making changes. But as you say it would be annoying if it is always doing that.

@herf

I am getting this too with Sharex

July032024_23h10m20.png

@herf I did that and also updated my GPU drivers. Same issue only when using f.lux and rebooting. Perhaps it only affects certain hardware. I have a Surface Laptop Studio 2. Are there any logs I can provide you?

I have made a pretty big jump from Windows 7 to Windows 11 in last few months. On Windows 11 I am experiencing the same thing and it's killing my eyes. In my case, f.lux gets disabled once the system receives a notification which usually comes from Outlook in my case (new mail). After few seconds, the colors are back to yellow automatically, but this quick moment is enough to receive a deadly dose of the blue light in the evening, I have never experienced it working on Windows Vista & 7 for 15+ years.

@Burgerkrieg I think I figured it out, at least in my case. Checking "Always use Windows internal color table" fixed it for the misbehaving monitor, which was otherwise doing exactly what yours was.

@herf Yes, they support HDR. To be specific they are both an Acer Nitro 27".

Additionally, I am using Windows 11's Auto HDR setting. Which, to my understanding, changes a display to SDR if the content (or just games? That is all I see it with at least) does not support HDR.

@Chikins the ones we read say "VCGT profile=1" so it is not a full profile in this case.

@tyealia yes the DisplayLink device is forcing them all to use the same settings because the USB adapter has disabled color settings. See if this post helps: https://forum.justgetflux.com/topic/3629/displaylink

@cjmanca can you post f.lux options > driver info?

My machine here doesn't appear to notice this case (even when I unplug the second monitor) so I want to figure out what's going on there.