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CpuTscSync

It is a Lilu plugin, combining functionality of VoodooTSCSync and disabling xcpm_urgency if TSC is not in sync. It should solve kernel panics after wake.

Install / Use

/learn @acidanthera/CpuTscSync
About this skill

Quality Score

0/100

Supported Platforms

Universal

README

CpuTscSync

Build Status Scan Status

It is a Lilu plugin, combining functionality of VoodooTSCSync and disabling xcpm_urgency if TSC is not in sync. It should solve some kernel panics after wake.

WARNING: CPUs without MSR_IA32_TSC_ADJUST (03Bh) are currently unsupported on macOS 12 and newer. WARNING: if you still get kernel panic like "Non-monotonic time: invoke at 0xxxxxxxxxxx, runnable....", you can try to add TSC_sync_margin=0 into your boot-args. See CpuTscSync Monterey kernel panic on wake up #1900" for more details

Boot-args

  • -cputsdbg turns on debugging output
  • -cputsbeta enables loading on unsupported macOS
  • -cputsoff disables kext loading
  • -cputsclock forces using of method clock_get_calendar_microtime to sync TSC (the same method is used when boot-arg TSC_sync_margin is specified)

Credits

View on GitHub
GitHub Stars200
CategoryDevelopment
Updated4d ago
Forks41

Languages

C++

Security Score

95/100

Audited on Mar 24, 2026

No findings