mcelog error with new B560 motherboard on 6.9.1

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This has been happening since I did a boardswap from a Z490 to a B560. I'm seeing this in syslog at boot:

Mar 10 09:24:24 BeepServ kernel: smpboot: CPU0: Intel(R) Core(TM) i3-10100 CPU @ 3.60GHz (family: 0x6, model: 0xa5, stepping: 0x3)
Mar 10 09:24:24 BeepServ kernel: mce: [Hardware Error]: Machine check events logged
Mar 10 09:24:24 BeepServ kernel: mce: [Hardware Error]: CPU 0: Machine Check: 0 Bank 6: ee2000000040110a
Mar 10 09:24:24 BeepServ kernel: mce: [Hardware Error]: TSC 0 ADDR fef20080 MISC 3880000086
Mar 10 09:24:24 BeepServ kernel: mce: [Hardware Error]: PROCESSOR 0:a0653 TIME 1615397046 SOCKET 0 APIC 0 microcode e0


and then this after boot:


Mar 10 09:32:58 BeepServ root: mcelog: Family 6 Model 165 CPU: only decoding architectural errors
Mar 10 09:32:58 BeepServ root: mcelog: warning: 8 bytes ignored in each record
Mar 10 09:32:58 BeepServ root: mcelog: consider an update


The same processor & ram (i3 10100, crucial ballistix) did not generate any mce errors on the previous z490 motherboard. I've tried dinking around with the BIOS and also tried BIOS defaults. I removed the CPU and inspected both the cpu and motherboard pins. I'm not seeing any stability problems so far nor any other errors, but the system generally idles and lightly transcodes stuff on a Geforce 1050ti.


Does this look like a BIOS thing? Asrock said they don't support Linux, so try Windows. Not very helpful for this. Just wondering if there is something wrong with the motherboard that may warrant more tests and if I should consider returning or just ignore this error.



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  • 4 weeks later...

Without the diagnostics, assuming that it's very early in the boot process when it's initializing the cores, it's not a problem and safe to ignore.

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