https://developer.apple.com/forums/thread/819331

We hope there will be a fix in upcoming macOS builds.

We believe that all M4-era MBPs and Neo are working. It is the "pro" M5s with a retina XDR that are not.

You may be able to open up registry.dat within the app folder from regedit, but I am not sure how it is protected. We probably should do this at the app level rather than make you do this kind of thing.

After that, the lat, long (and the pin on the map) should match your location.

@terryd fnaf hi terry - this could be a lot of things, but the simple possibility is that f.lux could be crashing for some reason.

We made a major effort to remove our (rare) crash bugs in the latest beta, which I would recommend joining to see if it helps:

https://forum.justgetflux.com/topic/6289/to-join-the-f-lux-beta

If this doesn't help, post back with f.lux options > driver info

The issue is completely resolved in this beta version.

We did not have much luck getting a supported API (no root) working with f.lux, so we let it expire - the intention was to have it be a demo on the way to having a supported app.

f.lux does not leave any state that's permanent in the system, so usually a problem like this lives in the driver, somehow or another.

Changing screen colors is unfortunately not a very good place to run multiple apps at the same time, as the order of what should go first is not defined.

Since most laptops have "brightness" keys already, we did not work very hard at finding an alternative for laptops. The trouble with hotkeys generally is that it is very hard to find one that doesn't conflict with another app.

We do support "surface keys" which allows Alt+F11 and Alt+F12 to do the same thing - you have to turn it on in f.lux options.

In a pinch, you might be able to get an app like AutoHotKey to alias those keys that we register

I will make a change in the next beta and we'll see if anything breaks. thanks!

I've got new DELL monitor P2425. Now compared to older P2422 (and cheaper one) color depth is much more deep in p2425.

There is no way to control depth (only brightness and contrast, I need HUE i guess) on monitor so the only way known to me was the color profile change

When setting up custom profile for my monitor (main one) I realized as soon as I turn on F.lux it messes up the profile (or using different one to operate

Here is how my color profiles looks like :

Now P2425 is main one, but for some reason it is second in list it is second

In windows its 3rd

Now I am periodical supporter, I am not demanding anything =)
It would be nice to have ability to either
a) operate differently
b) ability to select which color profile to use

I am right now forced to use windows night shift settings, not ideal, but at least I have desired color depth.

I've been reading up on the potentially harmful effects of blue light, specifically in the form of macular damage/macular degeneration.

I found a few studies on the topic but I'm honestly not informed enough to really understand them:
https://pmc.ncbi.nlm.nih.gov/articles/PMC4734149/
https://pubmed.ncbi.nlm.nih.gov/39741521/
https://pubmed.ncbi.nlm.nih.gov/11157889/

From what I have read so far, it sounds like there is some evidence that blue light can cause macular damage, but not enough to really conclude with much certainty.

One idea I have heard, is that the reason things like LED lights, and device screens, could be especially bad for your health, is that they have a fairly "blue tinted" spectrum, compared to something like sunlight, which is a lot more balanced:

Example diagram
Example diagram 2

The idea being that having a lot of blue light, without much light of other colours, can cause damage, where a more balanced spectrum could not.
A term I have heard is "Rhodopsin mediated photo reversal", and the idea that this is caused specifically by a lot of blue light + the absence of other wavelengths (as opposed to a balanced spectrum like sunlight, or an old fashioned "hot" light bulb)

My 2 main questions are:

1. Is it true that not just the absolute intensity, but also the relative intensity of blue light can make a difference? e.g. spectrum which are lacking in other colours could cause more damage than a balanced spectrum?

and

2. Assume that 1) is true, in that case, what kindof display would you expect to be more damaging, traditionaly LCDs, or OLEDs? As OLEDs tend to have much sharper "peaks" in light intensity, due to how they work, but also a lower absolute emission of blue light. An OLED spectrum might look like diagram 2, whereas an LCD spectrum might look like this.

I'm sure this is a topic that gets talked about a lot so apologies if any of this is re-hashing obvious stuff

A workaround is to use the open source app "AutoDarkMode" to handle theme switching and disable the option in f.lux. It would be nice to have this work properly in f.lux to reduce the need for extra apps.

I'm on a 2020 MBP (2.3 GHz Quad-Core Intel Core i7 processor; Intel Iris Plus Graphics 1536 MB) running Tahoe 26.2, though f.lux stopped working with Tahoe 26.0. I use multiple "desktops" (maybe called "Spaces"? now).

I disabled "Automatically Adjust Brightness" as suggested in earlier posts. Now f.lux works (if I restart it) UNTIL I switch desktops. Then it stops working again. Returning to the desktop on which I started it, does not bring it back, even for that desktop.

I also verified that Night Shift was off and not causing conflicts.

Any suggestions? I really miss the f.lux functionality.

If you are going to suggest I report any of this to Apple via their feedback form, what category do I submit it under? What should I tell them?

Thanks!

thanks for this brilliant program. Would it be possible to add an option or change the functionality of "Disable when using", so that only the used screen is affected?
Having more than one monitor, using a program in the dark can have quite the flashbang effect. It would be great if users could have better control over this.
If an automatic detection would prove difficult or too expensive for some reason, I personally wouldn't mind if I had to select the monitor, similar to the already available monitor selection option.

Thanks for the consideration!

Huh? I'm made of light? Awesome!!!

Great application though!

On newer Apple Silicon macs, there is no switch (since there is just one GPU) and so we don't have to build a profile to keep things working. It's better in most cases for f.lux to be a "temporary" effect. But in case you somehow wanted the old behavior, it might still work with a pref - check out: https://justgetflux.com/news/2014/10/28/profile.html