When an IT department wishes to have control of automatic updates and default settings.

For any 'site license' situation (centrally managing installs for many machines).

When should a company obtain a paid license for f.lux?.

If you have rights to install it yourself, and your employer approves, we allow it under our personal license. Our license is with you, the end user, and not with the company. Our EULA allows users to download and use the software on work machines. Yes, with the knowledge and permission of your employer.

Can I use the free version of f.lux on my work computer?.

Some people may have to reboot after this. You will need to disable 'Automatically adjust brightness' in System Preferences, Displays. In older ones, El Capitan has a new automatic brightness feature that conflicts with f.lux on some models. This is fixed in the later versions of El Capitan.

With f.lux on Mac OS El Capitan (10.11), the display is flickering rapidly when the light changes.

To fix, look in System Preferences > General and uncheck 'Use LCD font smoothing when available'

f.lux on 10.12.4 with Darkroom mode has really bad-looking text.

If that's no good either, use the Options menu to turn off 'Backwards Alarm Clock'. If they are happening at the wrong time, make sure your wake time is set to the right number in 'Preferences'.

How do I turn off the 'waking up' notifications?.

Look at System Preferences > Displays > Color.

In most other cases, the fix is to disable automatic brightness AND reboot. This is no longer happening for most people as of the 37.7 update.

On El Capitan, sometimes my screen is tinted during the day, even after quitting f.lux.

This fix from Apple is only in Mojave, so you'll want to upgrade to 10.14.

I have a newer 2017+ Macbook Pro running High Sierra (10.13), and sometimes white colors turn cyan.

For Chrome, one of our amazing users has made an extension that fixes the issue: This is a video driver bug and not something we can fix directly.

I have a newer 2013+ Intel GPU on the Mac, and fullscreen video has blue artifacts.

How do I donate to f.lux? There's a Paypal link here.

Mac update history, in AppCast format: macflux.xml Life and the universe.

Welcome BigUpdate Readme (includes release notes)

To install or uninstall f.lux, click here.

Search our list of questions first, and if you don't find what you need, head over to our forum.

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