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I have this error at ubuntu 18.10. I already tried ubuntu 16 and fedora 28.

stephany@pop-os:~$ dmesg | grep microcode
[    0.039771] mce: [Hardware Error]: PROCESSOR 0:906e9 TIME 1540433077 SOCKET 0 APIC 0 microcode 8e
[    0.039776] mce: [Hardware Error]: PROCESSOR 0:906e9 TIME 1540433077 SOCKET 0 APIC 0 microcode 8e
[    0.039779] mce: [Hardware Error]: PROCESSOR 0:906e9 TIME 1540433077 SOCKET 0 APIC 0 microcode 8e
[    0.039782] mce: [Hardware Error]: PROCESSOR 0:906e9 TIME 1540433077 SOCKET 0 APIC 0 microcode 8e
[    1.153987] microcode: sig=0x906e9, pf=0x20, revision=0x8e
[    1.154215] microcode: Microcode Update Driver: v2.2.

Updated

stephany@pop-os:~$ dmesg | grep mce
[    0.024000] mce: CPU supports 10 MCE banks
[    0.040355] mce: [Hardware Error]: Machine check events logged
[    0.040356] mce: [Hardware Error]: CPU 0: Machine Check: 0 Bank 6: ee2000000040110a
[    0.040357] mce: [Hardware Error]: TSC 0 ADDR fef1ffc0 MISC 7880010086 
[    0.040360] mce: [Hardware Error]: PROCESSOR 0:906e9 TIME 1540479088 SOCKET 0 APIC 0 microcode 8e
[    0.040360] mce: [Hardware Error]: Machine check events logged
[    0.040361] mce: [Hardware Error]: CPU 0: Machine Check: 0 Bank 7: ee2000000040110a
[    0.040362] mce: [Hardware Error]: TSC 0 ADDR fef1ce40 MISC 47880010086 
[    0.040364] mce: [Hardware Error]: PROCESSOR 0:906e9 TIME 1540479088 SOCKET 0 APIC 0 microcode 8e
[    0.040365] mce: [Hardware Error]: CPU 0: Machine Check: 0 Bank 8: ee2000000040110a
[    0.040366] mce: [Hardware Error]: TSC 0 ADDR fef1ff40 MISC 7880010086 
[    0.040368] mce: [Hardware Error]: PROCESSOR 0:906e9 TIME 1540479088 SOCKET 0 APIC 0 microcode 8e
[    0.040369] mce: [Hardware Error]: CPU 0: Machine Check: 0 Bank 9: ee2000000040110a
[    0.040369] mce: [Hardware Error]: TSC 0 ADDR fef1ff00 MISC 3880010086 
[    0.040371] mce: [Hardware Error]: PROCESSOR 0:906e9 TIME 1540479088 SOCKET 0 APIC 0 microcode 8e
Alvin Liang
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Stephany Henrique
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  • The processor code suggests that it is a i7-7700K. Machine Code Exceptions (MCE) can be hard to isolate. As a test try kernel 4.19. microcode 8E is the most recent. – Doug Smythies Oct 25 '18 at 14:32
  • Did you tried to update your BIOS? Same issue at somewhere suggested that it is gone after BIOS upgrade. https://bugzilla.redhat.com/show_bug.cgi?id=1455232 – Alvin Liang Oct 25 '18 at 15:07
  • Yes the microcode is already the latest version so I don't think it's microcode related. – Alvin Liang Oct 25 '18 at 15:08
  • I updated the kernel to 4.19 and I have the same error – Stephany Henrique Oct 25 '18 at 15:37
  • Do you have any other problems with the machine, or just the MCE's? Did Ubuntu 16 error the same way? What kind of computer? Edit your question to include sudo lshw -c memory. Boot to a Ubuntu Live DVD/USB and run memtest for at least one complete pass. Report back to @heynnema – heynnema Oct 25 '18 at 18:35

1 Answers1

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They are not necessarily microcode error.

The "microcode" string in mce logs are just telling you which CPU is having errors and which microcode version it has.

You should inspect dmesg lines around those mce logs first.

Alvin Liang
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