Hello,
Here are some steps you can try:
Check Device Configuration:
Ensure that the device is configured to enter a low-power state when idle. This can often be configured in the device's properties in Device Manager.
Update Drivers:
Ensure that the device drivers are up to date. Sometimes, older drivers may not support the latest power management features.
Try installing the latest drivers from the manufacturer's website.
Set NeedModernStandbyToPowerDown:
As suggested, you can set the NeedModernStandbyToPowerDown parameter to True and re-run the test. This can be done in the HLK test configuration or through the device's registry settings.
System Power Settings:
Check the power settings in Windows to ensure that USB selective suspend is enabled. Go to Control Panel > Power Options > Change plan settings > Change advanced power settings > USB settings > USB selective suspend setting.
Best Regards,
Hania Lian
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