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Message #105650
[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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https://bugs.launchpad.net/bugs/1423296
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.
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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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