Note that autobrightness with f.lux is currently broken in OS X 10.11, and they suggest you to disable it: "Note for people using f.lux on El Capitan (10.11): The new version of "Automatically adjust brightness" in El Capitan seems to cause flickering with f.lux. For the moment, you'll have to turn this feature off to use f.lux. To make the fix, use System Preferences > Displays and uncheck. Occasionally, a reboot may also be necessary." [0]

[0]: https://justgetflux.com/news/pages/macquickstart/

It is, unfortunately...

> It's time that we move on to an implementation that actually works.

Android announced "Night Light" and Kindle added "Blue Shade" and iOS came in last with "Night Shift" so it appears everyone has.

When F.lux put up affiliate links hawking Himalayan salt lamps and Swarovski crystals and used "cancer" as the 30th word in a press release, I didn't feel too bad hitting "uninstall" for the final time. So Long, and Thanks for All the Tint.

Only one of the three things you mentioned is comparable to F.lux: iOS Night Shift.

> Kindle added "Blue Shade"

Blue Shade is, unfortunately, an exceedingly half-assed implementation; I wouldn't be surprised if an intern wrote it over the course of a month or two. Unlike F.lux, (or Cf.Lumen on Android), it doesn't change the color temperature of the screen—instead, it uses the same naive implementation as apps such as Twilight or Lux, which is a semitransparent reddish overlay that causes black colors to turn red. Considering that Kindles are running a completely customized Android ROM, Amazon could have done so much better.

> Android announced "Night Light"

This is only for Google Play Books, and nothing else. [1]

[1] http://officialandroid.blogspot.com/2015/12/silent-night-wit...

Blue Shade is almost 100% un-fucking-usable. Its as though Amazon shipped it without a single person trying it out one time.

I see the same type of problems all the time. f.lux flashes between full blue light and the filter for a few seconds whenever I connect or disconnect my external monitor from my MacBook.

The issues you're talking about aren't ones I've seen anyone else complain about (and don't happen for me), so I'm wondering if there's something specific to your configuration that's affecting it.

Actually I believe these problems are fairly common. I've seen them mentioned before and I experience them myself. I think it has to do with integrated vs discrete graphics in Mac laptops.

Disabling transparency in the accessibility options used to fix it, but it doesn't anymore.

I'm very much hoping that Apple will include this functionality in the next major release of OS X as f.lux has historically had trouble keeping up with OS and hardware updates.

A quick scan of the F.lux forum itself and the six or seven HN articles posted here in the past 90 days shows lots of people having issues. It's really not an easy problem because it's trying to do something that operating systems aren't great at and don't really give you a clean approach to tinker. And video drivers are some of the worst code out there. But I've used this thing off and on for years and it's always been glitchy. If you follow Lorna's Twitter you'll see she rants about all the lights in the house going nuts on occasion, too.

I believe this is a known issue, I have the same issues on elcap

"I couldn't be bothered to Google the problem, but based on my sample size of 1, I think your problem doesn't exist"

Thanks for that useful comment, man.

I had the exact same issue for several months until one day it abruptly stopped happening without me (knowingly) changing anything related to it.

I don't think so – this happens for me as well.

This has started happening to me this week, and it is getting worse. In fact, I just opened the laptop, and the screen flickered for 10 seconds---worst yet.

I have noticed the same problems.