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Hello, I'm using Windows Hardware Lab Kit for Windows 11 24H2 through VHLK, and the device under test doesn't pass the test "USB Selective Suspend Test (XHCI)" with this error:
USB device USB\VID_XXXX&PID_XXXX\XXXX_PRN_NUM.0 with service usbprint did not power down or suspend. Please ensure the device is properly configured to power down when it is idle
If this device powers down only when the system enters modern standby, please set parameter "NeedModernStandbyToPowerDown" to "True" and re-run the test
SUCCEEDED(test->RunTest(deviceID.GetBuffer(), needModernStandbyToPowerDown)) - Value (0x80004005)
The same device pass the same test on Windows 11 22H2 installed on the same PC.
Can someone help me to understand this error?
Thanks!
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Hello Roberto Frati,
Thank you for posting in Q&A forum.
I am sorry, I couldn't find any official documentation explaining the differences in this test between 24h2 and 22h2.
However, in 24h2, support for USB 4 has been added, and there are notable changes in the power management protocol. So there might be new standards in this test as well.
Here is the link for your reference:
What's new in driver development for Windows 11, version 24H2
What's New in Driver Development for Windows 11, Version 24H2 - Windows drivers | Microsoft Learn
I hope the information above is helpful.
If you have any questions or concerns, please feel free to let us know.
Best Regards,
Daisy Zhou
============================================
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@Daisy Zhou , I think I have found an issue regarding the "USB Selective Suspend Test (XHCI)", but I would prefer not to discuss in a public forum such as this one. Is there a way that I can bring my concern forward in a more private manner and whom do I do this with?
Hello @Daisy Zhou , thanks for the response.
The printer device I'm testing is a USB 2.0 device, do you think it is involved in power management protocol updates?
Furthermore, it seems there isn't any printer driver updates for W11 24H2 in your link.
Do you think this failure is related to the fw of the device, or it is a driver bug?
Thank you.
BR
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