Hmm, well the first thing is, you need to install a "real" video driver - the Microsoft Basic Adapter is not so good.

But I don't think it should be doing that even so.

Update:
It seems that it takes data from ambient light sensor. Is there possibility to disable this?

If you have f.lux set to disable when running a full-screen program, then it should. Otherwise, it won't by default, no.

Oh and to answer your other question, this happens as soon as the program is launched. I don't have to click anything inside the program, it just starts going from normal mouse icon to "working in background" mouse icon.

Again, I am unsure what causes this but it seems to be an issue with the program crashing and restarting but I am unsure if it is the entire program or not because the screen stays with the Flux settings still being used.

@Qub1995 Wow, thanks for this! I had stopped using Flux because of this, but I'm back on the boat now thanks to this tip. Cheers!

And today the problem came back. I don't know what happens.

Thanks for that. I have made the change and will see if it works.

Chris C

Hey, I know this topic is a bit old, however I ran into the same issue today and I would like to share this fix I found for anyone who follows.
To block f.lux from keeping the PC awake, but still allow it to control your Hue lights when the PC is on, open a command prompt window in administrator mode by opening the search bar (Windows 10), searching for "command" and right clicking the command prompt and selecting "Run as administrator". Next, in the command window, type these two commands (confirm each by pressing enter):
powercfg /requestsoverride PROCESS flux.exe SYSTEM
powercfg /requestsoverride PROCESS flux.exe AWAYMODE

After that, f.lux should no longer prevent your PC from entering sleep mode.

Hope this helps!

Hey, I know this topic is a bit old but I ran into the same issue today and I would like to share this "fix" I found for anyone who follows.
To block f.lux from keeping the PC awake, but still allow it to control your Hue lights when the PC is on, open a command prompt window in administrator mode by opening the search bar (Windows 10), searching for "command" and right clicking the command prompt and selecting "Run as administrator". Next, in the command window, type these two commands (confirm each by pressing enter):
powercfg /requestsoverride PROCESS flux.exe SYSTEM
powercfg /requestsoverride PROCESS flux.exe AWAYMODE

After that, f.lux should no longer prevent your PC from entering sleep mode.

Hope this helps!

Hey, I know this topic is a bit old but I ran into the same issue today and I would like to share this "fix" I found for anyone who follows.
To block f.lux from keeping the PC awake, but still allow it to control your Hue lights when the PC is on, open a command prompt window in administrator mode by opening the search bar (Windows 10), searching for "command" and right clicking the command prompt and selecting "Run as administrator". Next, in the command window, type these two commands (confirm each by pressing enter):
powercfg /requestsoverride PROCESS flux.exe SYSTEM
powercfg /requestsoverride PROCESS flux.exe AWAYMODE

After that, f.lux should no longer prevent your PC from entering sleep mode.

Hope this helps!