@herf
Thanks, I see that now but I didn't notice it before you mentioned it.
What does the Disable for a specified program do? Does it set the display to 6500K and is that what the Return to Full Brightness does?

Do all these options do the same thing? Or can the colour temperature be at 1900K when "Return to Full Brightness" is enabled? It's not very clear what the keyboard shortcuts do. I would think that if the colour temperature was set to 1900K then Alt+PgDn would only reduce the brightness from 1900K and go up to 1900K maximum. That would be different to Full Brightness would it not?

@flux_onetimepost I am wondering, whether some old version of f.lux would work in such a manner that we are able to manually specify the screen colour without extra smarts from the software?

@duskdevilza usually this is due to a USB connected monitor (which does not have full color controls). Sometimes these notes can help:

https://forum.justgetflux.com/topic/4653/tinted-screenshots-or-fullscreen-apps-and-games-missing-f-lux

@herf I gave that a shot and its still missing. Yep, its def. running. It shows in the activity monitor and the color shift still works. Actually, the reason I posted last night is because I was editing photos and I wanted to make sure I got the color correction right so I wanted to turn it off but couldn't until I finally restarted the computer.

@TeaTeacher you're saying disable by app is not working in Sonoma? It does seem to be working in Sonoma 14.4 here - which version are you using?

@gtfhercules f.lux functions as a "VCGT" loader, so any part of the profile in this header will be loaded and preserved. If this is not working, could you please send it to email - support at justgetflux.com?

@accessolutions our corporate build requires activation but transmits no personal information to do it. The license is per-machine.

@influxensa first, yes it should do nothing!

I'll be slightly more correct than our FAQ:

Monitors use a chromaticity called "D65" which has a tiny bit more green in it than 6500K does and is also around 6504K, and basically every display in the world is calibrated to show this color as white. When you ask f.lux to use 6500K it really uses D65....but that's why it does "nothing".

@reina3 These color effects are not on the "planckian locus" meaning there is no CCT that matches them exactly - this one is very close to 6400K but not really! We should allow scheduling these in a future version.

@Yemafu the big reason to like TUV certification is that it ensures a low-flicker display, which is really helpful.

For blue light, this standard is not very effective, as it's a super tiny change in blue light, usually below 10%. You'd be better off with something that dims to a comfortable level, or adjusting your desk and the glare around it.

@Holoubek You might want to set Backwards Alarm Clock a bit earlier. For example you want to stop working at 9pm, you should set the wake up time to 6am.
46a732ae-c090-47e8-9707-307e58c63b2b-image.png
It should notify you around that time.

@bitzie I would first expect the NVIDIA driver, since these drivers over the last few years have had modes that turn off color controls ("reference mode" and other things), though recently one of them was very hard to turn off once you turn it on.

I can only recommend looking some more into color settings in the NVIDIA control panel ("Current color accuracy mode" under "Adjust desktop color settings"?)

Hi everyone - yes it is still one click to turn it off. However, without it, people do not set their wake time, and so f.lux cannot customize lighting based on this information. These two features work together, and I hope it isn't too hard to turn off the notifications if they aren't helpful - but we will leave it on for this reason.

@karahbit yes we have been saying this since a few years before Iris existed, though it sounds like our marketing isn't as good!

With a majority of LED backlights today showing essentially no flicker when they dim (see https://www.notebookcheck.net/PWM-Ranking-Notebooks-Smartphones-and-Tablets-with-PWM.163979.0.html), we don't think this is for everyone, as it has an impact on contrast and power usage. But with a display with bad flicker, it's absolutely a good way to do it.

Now the version of flux-setup.exe that is linked to from the website has a Last-Modified header of "Wed, 21 Feb 2024 23:39:51 GMT" and when installed indicates "Exit f.lux (v4.134)".

Thanks for updating, and thank you for the program.

(This can now be closed. Thank you.)

@karahbit it is not an overlay - only our vignette mode does that.

So, after some trial and error, I found a workaround. It's not the most elegant solution, but it works for me. I manually adjust Flux settings before firing up the game. I tinker with the color temperature so it's not too harsh during gaming sessions. Not a perfect fix, but it beats the constant back-and-forth disabling dance.

@SwaggerBagpipe Which version are you running? Our June 2023 update did address this somewhat: https://justgetflux.com/news/pages/mac/

@scraja4u which version of f.lux, and which version of Sonoma? Also how is the second screen connected? We likely do not support USB connected monitors.