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IDProjectCategoryView StatusLast Update
0006981UEFI93RTCpublic2025-11-07 15:24
Reporterwiedemann Assigned To 
PrioritynormalSeverityminorReproducibilityrandom
Status resolvedResolutionfixed 
Product VersionV1.2 
Target VersionV1.3Fixed in VersionV1.3 
Summary0006981: Windows fails to read Time and Date from RTC
DescriptionSometimes Windows fails to read date and time from the RTC on startup.

Windows sets date and time to deafault, defined in the UEFI.

This Error appears in the Debug console, when failing to read the RTC:
rtcpcf85263: Oscillator stop detected in PCF85263_Init, date/time is not reliable
iMX9RTC: Initialized with sample time 1.7.2023 9:00:00 UTC, DST.
Steps To ReproduceShut down or cut the power to the system.
Restart the System.
Repeat until Windows fails to read RTC and displays wrong date and time.

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