System returning from sleep three seconds after entering - why?

In the past month month, my computer, running 2004, has stopped its normal overnight behavior of entering sleep three hours after I restart it, then staying asleep until I wake in the morning, with waking from sleep on its own three seconds after entering sleep.

You can see this below from the event viewer:



The event above it, 107 (102), has the system resuming from sleep three seconds later.

Actually, before the event shown from 10/9, it hadn't entered sleep since 10/6, when it remained in sleep for three seconds.

And a look at the event log - which I swear used to go back more than a year but now only goes back three weeks - shows that if the system ever entered sleep during that time - most days it did - it would wake in three seconds, and then when I touched the computer (clicked or jiggled the mouse) hours later, Event ID 1, power troubleshooter, would say the computer has returned from a low power state.

Is this normal? I am 100% sure the computer would sleep - not sleep and wake, then return from a low-power state - at one time. How do I get the computer to actually sleep again, until I wake it hours later?

Just worth asking -- do you have any Optional Windows Updates showing up and not installed? Specifically, optional previews of cumulative or net framework updates. If you do, please see the following link starting with post #90. A number of people who haven't installed the optionals have the sleep issue and your time frame matches. If you don't have optionals that are listed and not installed, then do follow Macboatmaster's advice.

KB4571744 Cumulative Update Windows 10 v2004 build 19041.488 - Sept. 3

Execute powercfg /lastwake command to identify the event or device that is responsible for the last waking process. Once the results are shown, check the “Instance Path:” to see where it originated from (the USB or PCI port for instance) and look under “Type:” for the nature of the cause, typically a device or a wake timer.

Execute powercfg /devicedisablewake “Intel(R) USB 3.0 eXtensible Host Controller - 1.0 (Microsoft)” command to disable wake for the device.

If above command wont work, head into your device manager by holding down the Windows-key + R and enter “devmgmt.msc”. In the device manager, search for the the device in question, right-click it and select “Properties”. Then simply switch to the “Power Management” tab and uncheck the box for “Allow this device to wake the computer”.

Macboatmaster said:

Please try = admin cmd prompt and type or copy and paste
powercfg -lastwake

that may tell us what actually woke it

Also please try
powercfg -waketimers
and
powercfg /requests

If all of those get you no where then try this one please
powercfg/SYSTEMSLEEPDIAGNOSTICS
Generates a diagnostic report of system sleep transitions.
That should respond with a report has been gerated and is stored at
C:\Windows\system32\system-sleep-diagnostics.html.
If you then go to windows - system 32
open it scroll down to the s entries you should see the html file -system sleep diagnostics HTML file with the browser icon on which it will open - just click it
When you open it - it may well give you more details of what woke the system

In respect of the missing event items - MAYBE the upgrade to 2004

Below is the command prompt with the results of the queries you mentioned:



So, not a lot of substance there.

The system sleep diagnostics report also does not seem to show much. I tried to attach it but can't attach html.

Maybe this helps
https://www.windowslatest.com/2020/0...-mode-problem/

FreeBooter said:

Execute powercfg /lastwake command to identify the event or device that is responsible for the last waking process. Once the results are shown, check the “Instance Path:” to see where it originated from (the USB or PCI port for instance) and look under “Type:” for the nature of the cause, typically a device or a wake timer.

Execute powercfg /devicedisablewake “Intel(R) USB 3.0 eXtensible Host Controller - 1.0 (Microsoft)” command to disable wake for the device.

If above command wont work, head into your device manager by holding down the Windows-key + R and enter “devmgmt.msc”. In the device manager, search for the the device in question, right-click it and select “Properties”. Then simply switch to the “Power Management” tab and uncheck the box for “Allow this device to wake the computer”.

Unfortunately, there are no lastwakes shown when I run that command.

And the Host Controller is not allowed to wake the computer:

steve108 said:

Maybe this helps
Windows 10 update breaks sleep mode feature - but there's a fix

This appears to have solved the problem. FIX: We Could Not Complete The Install Because An Update Service Was Shutting Down (similar but not exactly the same) was also helpful.

I did two quick tests. In one I used the power > sleep from the start menu to force the computer into sleeping. In the other, I changed the sleep timeout from three hours to two minutes, so it would automatically sleep within a short timeframe.

In both of those cases, the event viewer later indicated that the system resumed from sleep in 1-3 seconds. However, the computer fan was silent while I waited for a few minutes. Then jiggling the mouse did not wake the computer. It would remain in whatever state it was (I'll call it sleep, though this might technically be wrong), until I pressed on a keyboard key. Guessing that clicking the mouse would have revived the computer as well.

If it conforms to this behavior in the morning, I'll mark the problem as solved.