Arch Linux

Cbhihe

Member

Registered: 2017-04-09

Posts: 230

kernel: mce: [Hardware Error]: PROCESSOR

[4.13.5-1-ARCH] on a new UEFI/GPT Intel i7 (8 thread) laptop

Upon trying to detect any available microcode update for the machine (to install the latest if available),
I followed that wiki (section: "Detecting available microcode update").

So I - installed Intel's microcode from repo "extra"
       - installed iucode-tool from AUR, after importing its GPG key.
       - enabled any potential microcode update by manually editeing
          /boot/grub/grub.cfg for each Arch grub-menu entry with
                       initrd    /intel-ucode.img /initramfs-linux.img
       - checked the version # of Intel cpu microcode already loaded

$ grep microcode /proc/cpuinfo
0x48

       - checked that the intel-ucode.img contains a microcode image for CPU with signature 0x000906e9
(provided I interpret that output correctly)

$ sudo modprobe -v cpuid
$ sudo bsdtar -Oxf /boot/intel-ucode.img | iucode_tool -tb -lS -
iucode_tool: system has processor(s) with signature 0x000906e9
microcode bundle 1: (stdin)
selected microcodes:
  001/159: sig 0x000906e9, pf_mask 0x2a, 2017-04-06, rev 0x005e, size 97280

      - rebooted
      - checked my journal for today grep'ing "microcode"
      (note that 13.21:18 was boot time)

$ journalctl | grep microcode | grep -e "Oct 14"
Oct 14 13:21:18 HOSTNAME kernel: microcode: microcode updated early to revision 0x5e, date = 2017-04-06
Oct 14 13:21:18 HOSTNAME kernel: mce: [Hardware Error]: PROCESSOR 0:906e9 TIME 1507980076 SOCKET 0 APIC 0 microcode 5e
Oct 14 13:21:18 HOSTNAME kernel: mce: [Hardware Error]: PROCESSOR 0:906e9 TIME 1507980076 SOCKET 0 APIC 0 microcode 5e
Oct 14 13:21:18 HOSTNAME kernel: mce: [Hardware Error]: PROCESSOR 0:906e9 TIME 1507980076 SOCKET 0 APIC 0 microcode 5e
Oct 14 13:21:18 HOSTNAME kernel: mce: [Hardware Error]: PROCESSOR 0:906e9 TIME 1507980076 SOCKET 0 APIC 0 microcode 5e
Oct 14 13:21:18 HOSTNAME kernel: microcode: sig=0x906e9, pf=0x20, revision=0x5e
Oct 14 13:21:18 HOSTNAME kernel: microcode: Microcode Update Driver: v2.2.
Oct 14 17:57:00 HOSTNAME kernel: mce: [Hardware Error]: PROCESSOR 0:906e9 TIME 1507996618 SOCKET 0 APIC 0 microcode 5e
Oct 14 17:57:00 HOSTNAME kernel: mce: [Hardware Error]: PROCESSOR 0:906e9 TIME 1507996618 SOCKET 0 APIC 0 microcode 5e
Oct 14 17:57:00 HOSTNAME kernel: mce: [Hardware Error]: PROCESSOR 0:906e9 TIME 1507996618 SOCKET 0 APIC 0 microcode 5e
Oct 14 17:57:00 HOSTNAME kernel: mce: [Hardware Error]: PROCESSOR 0:906e9 TIME 1507996618 SOCKET 0 APIC 0 microcode 5e
$
$ grep microcode /proc/cpuinfo
microcode       : 0x5e
microcode       : 0x5e
microcode       : 0x5e
microcode       : 0x5e
microcode       : 0x5e
microcode       : 0x5e
microcode       : 0x5e
microcode       : 0x5e

So apparently the update was successful.  But what are those HW errors ?
Without being 100% certain, I don't think they are related because they appear from day one of the Arch install in the journal.
Can somebody help me out with that ? I googled around looking for answers but did not get anywhere.
Tx. -ced

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shak

Member

Registered: 2009-03-16

Posts: 405

Re: kernel: mce: [Hardware Error]: PROCESSOR

Sorry for bumping this old thread but i also have these messages each time i boot. I don't know why . Does anyone have any ideas?

Lone_Wolf

Administrator

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 12,877

Re: kernel: mce: [Hardware Error]: PROCESSOR

Check https://wiki.archlinux.org/index.php/Ma … _exception, then start a new thread.
Include full journal output of one boot with the services mentioned on the wiki page running.

Last edited by Lone_Wolf (2019-07-22 13:18:41)

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ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,168

Re: kernel: mce: [Hardware Error]: PROCESSOR

I agree.  As we are now on the 5.2 kernel, shak, go ahead and start a new thread that you will own.  Closing.

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