How to update Intel microcode properly?
Manual method
How to verify if there's a new microcode update for your processor (Intel)
Go to the Intel drivers download center. Download the most recent microcode and then unpack the file, giving you a microcode.dat
file.
make sure you have the package
iucode-tool
:sudo apt-get install iucode-tool
Create temp folder:
mkdir /tmp/micro
"Unpack" this
microcode.dat
file to a temporary location:iucode_tool -K/tmp/micro microcode.dat
You can now check if there's a more recent microcode file using:
modprobe cpuid && iucode_tool -tb -lS /tmp/micro
(or wherever you unpacked the microcodes to).
On my old Core 2 Duo the output is like this:
iucode_tool: system has processor(s) with signature 0x0001067a selected microcodes: 001: sig 0x0001067a, pf mask 0xa0, 2010-09-28, rev 0x0a0b, size 8192 002: sig 0x0001067a, pf mask 0x11, 2010-09-28, rev 0x0a0b, size 8192 003: sig 0x0001067a, pf mask 0x44, 2010-09-28, rev 0x0a0b, size 8192
Compare this to the output of:
dmesg | grep "updated"
Sample output:
[ 1.056012] microcode: CPU0 updated to revision 0xa0b, date = 2010-09-28 [ 1.112010] microcode: CPU1 updated to revision 0xa0b, date = 2010-09-28
This shows that my system already uses the most recent microcode.
Method using a repository
Follow the instructions in this tutorial (note that you do not need to install synaptic
)
Install the following packages:
sudo apt-get install microcode.ctl intel-microcode
Reboot your computer.
Now check whether the microcode has been loaded properly, with the following terminal command:
dmesg | grep microcode
If all is well you should see several reports about the applied microcode.
Here is Pool of microcodes released by intel
http://ftp.ubuntu.com/ubuntu/pool/main/i/intel-microcode/
download latest .deb package and install via
sudo dpkg -i intel-microcode_3.20191115.1ubuntu3_amd64.deb
in My case it's intel-microcode_3.20191115.1ubuntu3_amd64.deb
P.S: ubuntu 18.04 shipped with 3.20180807a.0ubuntu0.18.04.1 and maintained to the latest, so no longer has to manually install it.
While @Rajat had the way to do it, his link is outdated You will be able to find the latest microcode here: http://ftp.ubuntu.com/ubuntu/pool/main/i/intel-microcode/?C=M;O=D
than after that, as root on your machine, do something like this:
wget http://ftp.ubuntu.com/ubuntu/pool/main/i/intel-microcode/intel-microcode_3.20191115.1ubuntu0.19.10.3_amd64.deb
dpkg -i intel-microcode_3.20191115.1ubuntu0.19.10.3_amd64.deb
reboot