Arch Linux

jasondaigo

Member

Registered: 2017-04-21

Posts: 11

Did i install microcode correct? (amd-ucode)

I built a new pc this week (R7900x,RX9070) and reinstalled arch
I installed amd-ucode as well.
Since im fighting with crashes like many others currently i wanted to double check if microcode is even active
journalctl -k --grep microcode showed:

kernel: microcode: Current revision: 0x0b404023

I was under the impression that after todays update from the official amd-ucode package that the output would change but it didnt.
does that just mean there was nothing for my rig updated in the firmware? or does it mean i didnt install it correctly?
Is it even in use?
I am using systemd-boot with this loader:

title   Arch Linux
linux   /vmlinuz-linux
initrd  /amd-ucode.img
initrd  /initramfs-linux.img
options root=UUID=9da6734e-f6cd-4ba2-97ce-972a3006d4ef rw amdgpu.ppfeaturemask=0xffffbffb

Last edited by jasondaigo (2025-05-10 11:42:03)

Scimmia

Fellow

Registered: 2012-09-01

Posts: 12,666

Re: Did i install microcode correct? (amd-ucode)

amd-ucode is almost entirely for high-end workstation/server/datacenter CPUs. See https://gitlab.com/kernel-firmware/linu … type=heads

jasondaigo

Member

Registered: 2017-04-21

Posts: 11

Re: Did i install microcode correct? (amd-ucode)

amd-ucode is almost entirely for high-end workstation/server/datacenter CPUs. See https://gitlab.com/kernel-firmware/linu … type=heads

Oh thanks. I dint know that. Arch wiki says "All users with an AMD or Intel CPU should install the microcode updates to ensure system stability." :-)

Scimmia

Fellow

Registered: 2012-09-01

Posts: 12,666

Re: Did i install microcode correct? (amd-ucode)

Looks like my info is out of date, that list is longer than I remember it so I did some checking and they added more consumer CPUs at the end of last year. Still, check if your CPU is on that list, it's very possible it isn't anyway. Even if it is, you may already have the version provided, or even newer.

xerxes_

Member

Registered: 2018-04-29

Posts: 904

Re: Did i install microcode correct? (amd-ucode)

https://www.phoronix.com/news/AMD-Zen-5 … code-Check Read also comments.

Ranguvar

Member

Registered: 2008-08-12

Posts: 2,572

Re: Did i install microcode correct? (amd-ucode)

See comment on amd-zen-ucode-platomav also from dobo.

Since 6.13.6: "This can be disabled by adding "microcode.amd_sha_check=off" on the kernel cmdline. But it is highly NOT recommended." - Borislav Petkov (AMD)