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[Bug 1423296] Re: Only one CPU core gets microcode updated

 

Just rebooted, and dmesg still shows only microcode of first CPU core
updated. All microcodes of all CPU cores updated again after the
reinstallation of the "intel-microcode" package.

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Title:
  Only one CPU core gets microcode updated

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  dmesg | grep -i microcode
  [    0.000000] CPU0 microcode updated early to revision 0xa0b, date = 2010-09-28
  [    0.718229] microcode: CPU0 sig=0x1067a, pf=0x40, revision=0xa0b
  [    0.718248] microcode: CPU1 sig=0x1067a, pf=0x40, revision=0xa07
  [    0.718266] microcode: CPU2 sig=0x1067a, pf=0x40, revision=0xa07
  [    0.718280] microcode: CPU3 sig=0x1067a, pf=0x40, revision=0xa07
  [    0.718286] microcode: CPU4 sig=0x1067a, pf=0x40, revision=0xa07
  [    0.718296] microcode: CPU5 sig=0x1067a, pf=0x40, revision=0xa07
  [    0.718308] microcode: CPU6 sig=0x1067a, pf=0x40, revision=0xa07
  [    0.718339] microcode: CPU7 sig=0x1067a, pf=0x40, revision=0xa07
  [    0.718441] microcode: Microcode Update Driver: v2.00 <tigran@xxxxxxxxxxxxxxxxxxxx>, Peter Oruba

  This is weird. All CPU cores showing same sig, but only one core's
  microcode updated?

  The machine has two physical CPUs, both are L5420, thus totally 8 CPU cores.
  ---
  ApportVersion: 2.14.1-0ubuntu3.7
  Architecture: i386
  DistroRelease: Ubuntu 14.04
  InstallationDate: Installed on 2013-05-18 (640 days ago)
  InstallationMedia: Xubuntu 13.04 "Raring Ringtail" - Release i386 (20130423.1)
  IwConfig:
   lo        no wireless extensions.

   eth1      no wireless extensions.

   eth2      no wireless extensions.
  MachineType: System manufacturer System Product Name
  NonfreeKernelModules: nvidia
  ProcFB:

  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-30-generic root=UUID=56330447-beb4-4d99-9f44-9daa91c8ca80 ro quiet splash nmi_watchdog=0 nohz=off cgroup_disable=memory
  ProcVersionSignature: Ubuntu 3.16.0-30.40~14.04.1-generic 3.16.7-ckt3
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-30-generic N/A
   linux-backports-modules-3.16.0-30-generic  N/A
   linux-firmware                             1.134~gd~t
  Tags:  trusty
  Uname: Linux 3.16.0-30-generic i686
  UpgradeStatus: Upgraded to trusty on 2014-07-24 (209 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers
  _MarkForUpload: True
  dmi.bios.date: 11/24/2009
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 0501
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: DSAN-DX
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev 1.xxG
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0501:bd11/24/2009:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnDSAN-DX:rvrRev1.xxG:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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