1.    28 Apr 2016 #1
    Join Date : Oct 2014
    Posts : 143
    Windows 10 1607

    Sleep states, how to control


    I believe that when Windows enters sleep, it goes from a light sleep state into deeper states. Is it possible to control when it does this, how long it spends in each state?

    I have a tablet that, after it's gone to sleep, can be woken up by the Windows key any time.
    I have another one that will only do that very shortly after going to sleep. After that, only the power button will wake it.

    I'd like to make the second tablet stay in a light sleep state where the Windows key will wake it up, for a longer time.
      My ComputerSystem Spec
  2.    28 Apr 2016 #2
    Join Date : Jan 2015
    UK, Midlands
    Posts : 11,110
    Win 10 Pro (1703)

    Hi, try a different perspective - but I don't know how useful that may be with a tablet:

    From an elevated command prompt:
    powercfg /devicequery wake_armed
    This will list anything presently configured that can wake your device from any sleep state.
    powercfg /devicequery wake_from_any
    This will list anything with the potential to wake your device from any sleep state.

    Explore further:
    powercfg /?
      My ComputerSystem Spec
  3.    29 Apr 2016 #3
    Join Date : Oct 2014
    Posts : 143
    Windows 10 1607
    Thread Starter

    Thanks, the devices under wake_from_any are Bluetooth, Microsoft Wifi Direct and Generic USB Hub (001).

    In Device Manager, the USB Hub has the Power Management tab in its properties. But the 'Allow this device to wake the computer' is greyed out.
    Even if I enable the super Administrator user account, it's greyed out. Maybe the hardware doesn't support it?

    (I'm assuming that somehow enabling the USB Hub to wake the tablet will mean the Windows key will be able to wake it up)
      My ComputerSystem Spec
  4.    29 Apr 2016 #4
    Join Date : Jan 2015
    UK, Midlands
    Posts : 11,110
    Win 10 Pro (1703)

    You may be limited in your options. Example: my new PC: keyboard and touchpad don't and can't wake device from sleep. (You need a power management tab on the properties sheet).

    The supplier was quite confident they could be configured, and did a remote session, failed (as I had expected), and retired puzzled - they are rather technically competent and knowledgeable). a couple of days later- phone call, apology, and earlier version had been capable of that. And in fact the manual supplied is accurate when I eventually foudn the disk and looked it up.

    So you need a power management tab - even apparently for a PS/2 keyboard.
      My ComputerSystem Spec

 


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