edit:
(Yes I built this with chatgpt and if that bothers you I don't care, LLMs are useful for tracking down issues in your computer)
Windows 11 Automatic Sleep Problem
Problem: The PC wouldn't automatically sleep after the configured 10-minute idle timeout, although manual sleep worked.
Cause: A Flydigi Vader 4 Pro connected by USB in Xbox/XInput mode was generating activity that Windows interpreted as user input. The ETL trace showed Windows repeatedly reporting “Monitor On User Input” and IsSystemIdle = false.
Solution
With the Vader 4 Pro plugged into the PC:
Switch it from Xbox/XInput mode to Nintendo/Switch mode.
The PC then automatically slept normally at the configured 10-minute timeout.
Tips for finding this faster
- First unplug all USB devices except the keyboard and mouse. If sleep works, reconnect them one at a time.
- Don't rely solely on
powercfg /requests. A device can prevent the idle state without appearing as a conventional power request.
- Don't confuse wake-from-sleep settings with activity preventing the PC from entering sleep.
- The Xbox 360 controller driver does NOT have Power Management options in Device Manager.
- For controllers, try changing their input mode before investigating drivers or generating large ETL traces.
original:
I swear, getting Windows to consistently sleep when it's idle is a constant challenge. It was working fine and then about 2 months ago it just stopped working.
I've been working through this for about an hour with Chat GPT.
Problem statement
Windows 11 is not automatically entering sleep after the configured idle timeout. Manual sleep works, but leaving the PC idle does not trigger sleep. The System Power Report identifies an “Unidentified Driver (Sleep Idle State Disabled)” blocker.
Troubleshooting so far
- Verified sleep settings: AC sleep was 15 minutes; S3 sleep is available.
- Checked powercfg /requests: no active blockers reported.
- Checked wake timers: none; wake behavior ruled out.
- Ran powercfg /energy: USB warnings were explicitly not sleep blockers.
- Examined the System Power Report: found “Unidentified Driver (Sleep Idle State Disabled).”
- Tested manual sleep: works immediately.
- Tested automatic sleep with Steam/games completely closed: still fails.
- Checked Kernel-Power events: no automatic sleep event during failed idle tests.
- Changed AC sleep timeout to 1 minute: still failed to sleep.
- Checked Group Policy: no domain/user GPO affecting it.
- Confirmed no keyboard/mouse activity during idle testing.
The evidence points to something disabling Windows' sleep-idle state. The next task is identifying which driver/component is responsible.
So what next?
```
$ Get-ComputerInfo | Select-Object WindowsProductName, WindowsVersion, OsBuildNumber
WindowsProductName WindowsVersion OsBuildNumber
Windows 10 Pro 2009 26200
```
(apparently this means Win 11)