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URL:
https://askubuntu.com/q/1017078
Title:
Why don't Intel microcode updates work on my system?
ID:
/2018/03/18/Why-don_t-Intel-microcode-updates-work-on-my-system_
Created:
March 18, 2018
Edited: March 18, 2018
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September 15, 2024
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Bug in Meltdown/Spectre Intel Microcode
There was a bug in early 2018 Intel Microcode update to address Meltdown/Spectre security holes. As such the microcode had to be rolled back to a previous version.
Here is the microcode Iām using (having opted out of all updates starting January 2018):
$ apt list --installed | grep intel-microcode
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
intel-microcode/now 3.20170707.1~ubuntu16.04.0 amd64 [installed,upgradable to: 3.20180108.0+really20170707ubuntu16.04.1]
When you install Intel Microcode Update you will get this version or something similar:
intel-microcode/3.20180108.0+really20170707ubuntu16.04.1
Ubuntu 16.04 LTS Menu
Iām not sure about Lubuntu menu structure but for regular Ubuntu this is how you access the Intel Microcode Update controls:
The bottom option controls Intel Microcode Updates.
Install Intel Microcode from CLI
To skip the GUI menus altogether you can install from command line:
sudo apt update
sudo apt install intel-microcode
dmesg now shows correct output
After following the installation steps dmesg returns the desired output (unlike in your question where it shows nothing):
$ dmesg | grep -i microcode
[ 1.166542] microcode: sig=0x506e3, pf=0x20, revision=0xba
[ 1.166993] microcode: Microcode Update Driver: v2.2.
[16082.584598] microcode: microcode updated early to revision 0xba, date = 2017-04-09