Notice: After several years I feel the need to say this. I originally wrote this as a guide for fixing a specific issue that occurred on builds of macOS shortly after Night Shift was introduced as a feature. The issue occurred because of a known glitch for handling enabling of Night Shift at installation time when upgrading a <10.12.4 macOS installation to 10.12.4 - 10.13.6 builds. Specifically this issue only occurred for people who were not using either an Apple monitor or the one model of LG monitor Apple "supported" at that time. Coinciding with their statement that they would "not support" other models of monitor for external displays on Macs with embedded displays (due to the way display drivers were handled at the time this also effected all Hackintosh users), Apple included code in macOS that would detect a monitor's brand and model by EDID and disable the Night Shift pane in settings. This led to a situation where the upgrade would enable Night Shift and the user would be left unable to disable it. The topic of this post has nothing to do with damaged cables, improperly seated cables, or an attempt to get the equivalent of Night Shift functionality on non-Apple/LG external displays. It is not a general thread for Night Shift as a feature and is intended to act as a guide to fix a known technical issue/incompatibility in a specific combination of macOS builds and monitors. I humbly request that users stop filling up the answers thread and muddying the waters with unrelated answers to unrelated Night Shift issues. Thank you. -OP
If you use an external monitor for your Mac of any shape or size and recently updated to macOS Sierra 10.12.4, chances are you've had some trouble with Night Shift.
Common issues include:
- the inability to configure Night Shift from your external monitor
- Night Shift being impossible to disable (as a result of the former)
- a substantial loss of colour quality (as a result of both of the former happening at once on some connection or screen types, most commonly DVI-D to VGA, DisplayPort, and LCD screens of all kinds.)
How do you get past these issues? Is there a way to enable access to the Night Shift pane on any display?