USB4 domain sleep test
Tests host and device router power down when USB4 devices idle.
Description
USB4 host routers must reliably support USB4 sleep and entry and exit when all tunneled protocols are idle. Tunneled device protocols must not electrically signal disconnect to their respective tunnels on entry or exit from USB4 sleep. And the USB4 host router must replay the protocol wake over the appropriate tunnel after the USB4 domain has resumed from sleep.
Test details
| Specifications |
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| Platforms |
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| Supported Releases |
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| Expected run time (in minutes) | 5 |
| Category | Development and Integration |
| Timeout (in minutes) | 5 |
| Requires reboot | False |
| Requires special configuration | False |
| Type | development |
Additional documentation
Tests in this feature area might have additional documentation, including prerequisites, setup, and troubleshooting information, that can be found in the following topic(s):
More information
Parameters
| Parameter name | Parameter description | Default value | Required? | Settable? |
|---|---|---|---|---|
| WDKDeviceID | Device ID of the target host router device. If not set, tests are run against all host router devices on the system. | WDKDeviceID_NULL | False | False |
Enhancement scenarios
USB4 host routers enter their lowest possible power state and conserve battery life when idle.
Test Setup
- Have at least one external USB4 device which is expected to be tunneled over USB3, PCIe or DP connected to the USB4 domain.
- Run the test. It will prompt you to disconnect all devices connected to the USB4 domain and wait for some time to allow the domain to power down.
- Ensure successful power down and validate the number of active tunnels before power down.
Troubleshooting
For generic troubleshooting of HLK test failures, see Troubleshooting Windows HLK Test Failures.