PC unexpectedly wakes from sleep


  1. Posts : 720
    Win10 x64 Pro - 2 desktops, 2 laptops
       #1

    PC unexpectedly wakes from sleep


    Every once in a while my PC wakes up a few seconds after I put it to sleep.
    "Powercfg -lastwake" shows
    Code:
    Wake History Count - 1
    Wake History [0]
      Wake Source Count - 1
      Wake Source [0]
        Type: Device
        Instance Path: PCI\VEN_8086&DEV_A348&SUBSYS_86D41043&REV_10\3&11583659&0&FB
        Friendly Name:
        Description: High Definition Audio Controller
        Manufacturer: Microsoft
    I have two audio adapters but neither of their instance paths match that:
    HDAUDIO\FUNC_01&VEN_8086&DEV_280B&SUBSYS_80860101&REV_1000\4&2B5000E5&0&0201
    and
    HDAUDIO\FUNC_01&VEN_10EC&DEV_0887&SUBSYS_104386D4&REV_1003\4&2B5000E5&0&0001
    Also, neither of them has a setting for waking the PC.

    My Ethernet adapter does have that option set (when a "magic packet" is received) but its instance path is another non-match:
    PCI\VEN_10EC&DEV_8168&SUBSYS_86771043&REV_15\4&AC99AD7&0&00EB.

    Is there any way to find the device that matches the instance path in question without going through every device? I suspect I'm not going to find a match but I don't trust my eyes to find the (probably missing) match.

    Is there a way that Windows would mislabel a device as an audio controller when it is something else?

    In general, how do I debug this?
    This is version 21H1 build 19043.1237.
      My Computer


  2. Posts : 21,421
    19044.1586 - 21H2 Pro x64
       #2

    Hello ,
    From a powershell window run:
    Code:
    Get-PnpDeviceProperty -InstanceId "PCI\VEN_8086&DEV_A348&SUBSYS_86D41043&REV_10\3&11583659&0&FB" | ft -AutoSize
    and see if that helps.
      My Computer


  3. Posts : 21,421
    19044.1586 - 21H2 Pro x64
       #3

    Make sure your BIOS and drivers are up to date as they could cause odd problems like this too
      My Computer


 

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