Solved: NUC6i7KYK - Resumes from standby after 2-5 minutes in Windows 8.1

[gcj9]

My new NUC6i7KYK keeps resuming from sleep for no discernible reason after 2-5 minutes in Windows 8.1 Pro.

Helpfully, Windows itself cannot tell the wake-source either. Here is example output from the System event log (Power-Troubleshooter event source):

The system has returned from a low power state.   Sleep Time: ‎2019‎-‎05‎-‎30T00:37:25.144727000Z Wake Time: ‎2019‎-‎05‎-‎30T00:39:43.981841200Z   Wake Source: Unknown

To complicate things further, this doesn't happen with Ubuntu Linux 18.04 on the same machine, but I cannot be sure Linux and Windows actually enter the same sleep/suspend state.

All drivers & firmware up to date, according to Intel Driver & Support Assistant.

Any suggestions for troubleshooting?

Detailed system report from Intel Driver & Support Assistant attached.

[Alberto_R_Intel]

3000022214501.5592057226943813E12, Thank you for posting in the Intel® Communities Support.

Please make sure to set the BIOS values to defaults by pressing F9 and then save the changes and exit with F10.

By any chance, are you using a "Power Plan" in Windows*?

Did you check the "Power and Sleep" and "Power Options" settings in Windows as well?

Is this a brand new Intel® NUC?

This problem, is it recently, was it working fine before?

Did you make any recent hardware/software changes?

Are you using perhaps a wireless, infrared or USB device that might be sending a signal that makes the Intel® NUC Kit NUC6i7KYK wake up?

As an option, we can try re-install the Intel® Chipset driver version 10.1.1.14:

https://downloadcenter.intel.com/download/26803/Intel-Chipset-Device-Software-for-Intel-NUC-Kit-NUC6i7KYK?product=89187

And also the Intel ® Management Engine driver version 11.0.5.1189:

https://downloadcenter.intel.com/download/26127/Intel-Management-Engine-Consumer-Driver-for-Intel-NUC-Kit-NUC6i3SY-NUC6i5SY-NUC6i7KYK?product=89187

Regards,

Alberto R.

Intel Customer Support Technician   

Under Contract to Intel Corporation

[gcj9 · Accepted solution]

Turns out the culprit was the "Wake on pattern match" Power Management option of the Intel® Ethernet Connection I219-LM device. Disabling that got rid of the spurious wakes.

[Alberto_R_Intel]

3000022214501.5592057226943813E12, Thank you very much for letting us know those results.

Perfect, excellent, it is great to hear that the problem of the Intel® NUC waking up by itself was resolved and now it is working properly.

Any other inquiry, do not hesitate to contact us again.

Regards,

Alberto R.

Intel Customer Support Technician   

Under Contract to Intel Corporation