If you are a gamer and want less impact while playing games, you can also try Options -> Very Fast transitions. We built it in! The new build has massively less impact on games and the overall system. Currently settings are only acessible through the taskbar. NOTE: f.lux does not appear in your dock, settings, or your alt-tab menu. In Windows, this is at the bottom right corner of your screen. Settings are located in a menu to the left of your system clock. Currently this build is only available for Windows, and it is covered by a separate Corporate EULA. In these cases, you should obtain a corporate license here.
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.
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.
Welcome BigUpdate Readme (includes release notes)