HP INCFollow

Abstract

The host uses USB-C power source from USB-C port on notebook or AIO now. The

USB-C power source detection fail happens sometimes. The power status is incorrect

and keep DC when the failure happens. The USB-C power source detection fail may

cause by communication problem between PD, EC, chipset and OS. The

communication problems are maybe related about the hardware, firmware, driver and

OS. It is a complex process for USB-C power source detection. We provide a Sure

USB-C Power Source Detection (SUPSD). When the USB-C power source plug-in,

SUPSD can detect the power status from OS. It can recover the USB-C power source

detection problem and make sure the power status is correct in OS. It can improve the

user experience.

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Creative Commons License
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