PC can't sleep while f.lux is running [philips hue only]



  • Greetings,

    I am on Windows 10 1703 build 15063 and I am running the current f.lux beta 4.39. I noticed that whenever I try to put my computer to sleep (suspend to RAM) it just shuts off the monitors but keeps running. Moving the mouse or typing a key immediately brings me back to the desktop without even having to unlock the screen.
    The only way to put the device into sleep is to exit f.lux before. This issue seems to appear around a week ago.

    According to 'powercfg -requests' flux.exe is listed in 'SYSTEM' and in 'AWAYMODE'.


  • f.lux team

    This should only happen if f.lux is running as Philips Hue controller (in the Options menu).

    Otherwise it should not prevent sleep.



  • I can confirm this! If I disable the Hue controller before, the PC can go into sleep without any issue.


  • f.lux team

    Maybe we will need to add a note that this will prevent your PC from sleeping.


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