I had this same problem. The "writeProfile" suggestion in the link above did not work for me. But I discovered something that did:

Open the configuration for the VM Go to the Options tab Select the Full Screen section on the left Expand the Advanced Settings section on the right Uncheck "Use Windows gamma settings". (The VM will need to be closed for you to be able to change this setting.)

@herf -- since the link above mentions this problem in Parallels, any chance you could update it with this new solution?

Hope this is helpful!

@Randy-Pan We have replied to you by email regarding this. Please stop posting about this on unrelated threads and check your email - thanks.

Do you mean the "favicon" on our website?

@herf OK, thanks for the info!! Lots to digest.

What does the error say?

@lorna Yes, I would like help. I don't understand the ins and outs of this.

Avez-vous redémarré? Fais ça en premier, puis, désactiver la luminosité automatique (et redémarré).

This option is off by default - if you turn it on, it does what it does.

I confirm as I already have 2 external monitors, on a 15 inch 2017 MacBook Pro what is connected via a DisplayLink docking.
Only the laptop monitor is being configured.

@lllusion said in How do I tell f.lux what my bedtime is?:

choice

For my routine, I make f.lux switch to orange starting around 7 pm if I want wake up time to be between 6 and 7 am. When sunrise is 5 am, I would make the color change start about 6 pm. My wind down involves listening to relaxing music.

I set my routine based on the the sunrise time. Some times the sunrise is ridiculously early, and others it is nice and late. When it is 5 am, my routine is forced to be as much as 2 hours earlier than the 7 am sunrise I like in winter.

I guess this is mostly about when it's still not bright enough. Like a 30-60 minutes after and before sunrise. Though before it should already work.

I just now found this after installing flux a couple of months ago. This has been driving me absolutely crazy.

If it helps here are my specs:
OSX Yosemite 10.10.1 and Flux 39.983
iMac - 27 inch (mid 2011) - 3.4GHz Intel Core i7
8GB 1333Mhz DDR3 RAM
AMD Radeon HD 6970M 2048MB GPU

Also running a Dell U2713HM 27 inch Display as a secondary monitor.