Windows 10: powercfg problem

I have a powershell script that calls powercfg -lastwake. Every now and then it will not return any data. The code below
Checks the return value $wake for null. If null it calls powercfg again. The other day I checked the system and the $try was at 2448. I did a ctrl-c which killed the powershell script. I then typed powershell -lastwake and got a good result.

My question is why does it some times fail to return an data?

Thanks
RAC

$try = 0
do {
$wake = powercfg -lastwake
Start-Sleep -Seconds 5
$try += 1
Write-Host "Wake tries: $try"
} while ($wake -eq $null)

:)

 

Wakeup from Hibernation

It didn't cure the problem

 

Windows 10 Sleep issue with Nvidia ?

There is a known problem with 361.75 which may have been resolved in 361.90. I would do a manual update of that version

If it continues to have problems

Please type the following in an elevated command prompt and paste the results in your next post

powercfg /A

powercfg /waketimers

powercfg /lastwake

powercfg /devicequery wake_armed

 

Hi, works for me- can only think maybe sthg is delaying the processing- was your system idle? But 5s is quite long.. hmm.

 

It works for me most of the time. But 2448 times 5 seconds part is 3.4 hours. Nobody was on the system. The system woke up at 8:00 AM for the next 3.4 hours every 5 seconds it failed to get a valid response from powercfg -lastwake. Yet if I open a command prompt and enter the command it works.