System auto-rebooted... mce: [Hardware Error] in dmesg related to CPU

[megavolt]

@Daniel-I

Other less ideal solutions include disabling c-states in the BIOS or adding processor.max_cstates=1 to your kernel command line arguments.

Yes, the C6 c-state is a problem… here is an old post of mine:

Manjaro KDE crashes randomly with Ryzen 7 3700X

Hello @Gandhi! -- Logs begin at Sun 2020-08-16 10:17:03 EDT, end at Sat 2020-09-19 01:25:33 EDT. -- Sep 19 01:22:17 Compy-3700X kernel: mce: [Hardware Error]: CPU 5: Machine Check: 0 Bank 5: bea0000000000108 Sep 19 01:22:17 Compy-3700X kernel: mce: [Hardware Error]: TSC 0 ADDR 1ffffc0197c54 MISC d012000100000000 SYND 4d000000 IPID 500b000000000 Sep 19 01:22:17 Compy-3700X kernel: mce: [Hardware Error]: PROCESSOR 2:870f10 TIME 1600492932 SOCKET 0 APIC a microcode 8701021 It is a known error of …

There I recommend to restrict the C-State to max 5.