@Vani09 it sounds like a full video driver crash. Usually our monitor info will show the video driver version, so I would look for an updated driver. Also are you on the latest version of f.lux?

@Sans96 thank you we will look into it

@T_H_M thank you - do you think it is not running on startup or is it more likely crashing? I am not seeing an uptick in crash reports on our side.

Have you found a solution?
I have exactly the same problem!
f.lux does not want to update to latest BETA.

I ended up buying another screen with normal minimum luminosity.

It's a bit unfortunate that comments take 18+ days to be validated, and that there aren't any new status since a year on that feature request.

@lysersz05 I noticed this the first time I installed it yesterday. Beer is making my body later, too.

@tom123 I agree. I think f.lux should behave like other apps when I have Windows set to dark mode all the time. Bothers me when random apps ignore it and blind me.

I have created a Windhawk mod for this purpose. This mod adjusts the Windows API for f.lux in such a way that f.lux thinks the time is always same, therefore not changing the colour automatically.

You can get it here: https://windhawk.net/mods/maintain-flux-colour-temperature

@herf said in Cannot disable F.lux colors; screen tints yellow on boot up whether F.lux is running or uninstalled:

f.lux does not ever turn on the Windows 10 feature

This is not true, f.lux did turn on this feature for me, and in addition it changed the dark mode settings for my windows as well.

I de-installed f.lux because i found no way to permanently disable it in the settings, and simply pressing exit flux only worked until my computer went to sleep mode, because after waking it up, flux was on in full effect, even though it was the middle of the day.
probably something to do with my nvidia drivers, since the problem got worse after an update of said drivers.

Uninstalling was a BIG mistake!

my screen kept turning yellow (more yellow than my windows night light setting which it also turned on, don't tell me i did it by mistake because i never even touched those settings.)
i lost all control over screen colour, and now i had to re-install it, and it will keep running on my pc until i reinstall windows one day..

i love what flux is trying to do, and there are many helpful and nice settings on it.
but there is no setting to just disable it until rebooting windows which is quite essential.

the reason this tilts me so much is because i installed it to gain control, but all i did was lose it..

@SteelTalow this is a problem with Windows for a while now, and we have not gotten a fix from Microsoft yet. The decent news is that it only seems to happen once per reboot - so it's terrible but it should be just the one time.

@duke6258 Usually we ask you to post "f.lux options > driver info" so we can get a better sense of what's going on. Sometimes this is a driver issue, and sometimes it is the way that the monitors are connected.

@Arnaud I think you may have encountered a feature that is not ours, but usually from Intel or Windows. You'll want to google "disable Intel DPST" or, if you have Windows 11, you can find an advanced option about changing brightness based on content, and turn it off.

@katjustice28 thank you - can you post f.lux options > driver info so we can understand which devices & versions are involved?

@thedoctor2031 yes it is definitely showing here "gamma ramp works=0" for one of the two, which indicates a problem with the video driver. Does it behave differently if you relaunch f.lux?

@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