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Microsoft USB Blog
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Debugging UCSI firmware failures

Rajib Dutta's avatar
Rajib Dutta
Icon for Microsoft rankMicrosoft
Nov 07, 2018
Background The UCSI driver in Windows communicates with the firmware UCSI component (called PPM or Platform Policy Manager) through the spec-defined command notification interfaces. While driver fa...
Updated Nov 07, 2018
Version 3.0
Patrick_Chen_HP's avatar
Patrick_Chen_HP
Copper Contributor
Jul 17, 2019
!rcdrkd.rcdrlogdump ucmucsicx requires Microsoft private symbol to expose trace.
Symbol being public will be helpful for issue triage with PPM command  protocol