Windows 10: How to prevent a device from waking up PC?

My computer woke up at night, recently after I put it to sleep. This is what the command prompt says about what woke it upWake History Count - 1Wake History [0] Wake Source Count - 1 Wake Source [0] Type: Device Instance Path: PCI\VEN_8086&DEV_A12F&SUBSYS_86941043&REV_31\3&11583659&0&A0 Friendly Name: IntelR USB 3.0 eXtensible Host Controller - 1.0 Microsoft Description: USB xHCI Compliant Host Controller Manufacturer: Generic USB xHCI Host ControllerFirstly, I don't really understand what this is. Is this a physical USB device? I ha

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PC wakes wakes up from Hibernate

Hello zolotoy,

Check using Option Two in the tutorial below to see if there may be an event log that may help ID what woke your PC.

*Arrow See Wake Source in Windows 10 Windows 10 Tutorials

If a device is identified, then you could prevent it from being able to wake the PC.

• See Devices able to Wake Computer in Windows 10 Windows 10 Tutorials
• Allow or Prevent Devices to Wake Computer in Windows 10 Windows 10 Tutorials

 

Troubleshooting PCs spontaneously waking from sleep

I've also battled with sleep/wake issues over the years, and from experience have learned that trying to find, or rationalise, the root cause is a waste of time. All you need is `powercfg`.

`powercfg -devicequery wake_armed` from an Administrator PowerShell window/Command Prompt will give you a list of all devices that can possibly wake the PC. This command is interesting because very often, it will show devices that you'd never expect being able to wake your computer. I think in one instance I had the chipset device listed!

`powercfg -devicedisablewake "device_name_from_device_query"`will prevent said device from ever waking the computer. This command is 100% the only thing I have found that will resolve sleep/wake problems. Updating drivers, unplugging peripherals, switching to a cleaner power supply (UPS), changing ethernet cables... none of those have helped, yet`powercfg -devicedisablewake` has done the trick.

Note that occasionally, devices you have disabled wake for may start waking up the PC again - this happens if you plug a USB device into a different port, or occasionally when drivers are updated, because Windows sees it as a new device. In that case rerun `powercfg` to find and disable that device again.

If this does not resolve your wake issues, I would start looking at power fluctuations.

 

How to prevent USB Composite Device from waking up the computer

I'm having trouble with a certain USB Composite Device waking up my computer when I don't want it to wake up. I have tried all tutorials that I found with Google but none of them solved the problem. Below is a screenshot that should contain all the relevant info. I would appreciate if someone could give me a hint or suggestion how to prevent this device from waking up the computer. I can't disable wake timers completely because the Ethernet device has to be able to wake up the computer.