How can i read the CPU microcode version on TrueNAS?

[Revan]

And is there some sort of intel-microcode package that can be installed to load a newer microcode when booting TrueNAS than is available via the BIOS?

 

[mav@]

TrueNAS 12 includes Intel and AMD microcode images. You should see messages on console about it during boot. There it also reports the versions when loads newer. But I generally recommend to update BIOS when possible.

 

[Revan]

Code:

dmesg | grep microcode

delivers nothing.

I also did a

Code:

dmesg | less

but found nothing that shows the microcode version.

How can i install or activate these images?

 

[mav@]

You won't see it in dmesg, since it it printed by user-space utility cpucontrol, called by microcode_update rc.d script during boot. For Intel CPUs it looks like: "%s: updating cpu %s from rev %#x to rev %#x...". For AMD IIRC it looks different. If there are no updates, you should see just:

Code:

Updating CPU Microcode...
Done.

 

[Revan]

Thanks. Is there also a way to read the microcode version after the boot?
Something similiar to /proc/cpuinfo?

 

[Samuel Tai]

/var/log/daemon.log has the output from cpucontrol. Just grep microcode /var/log/daemon.log | tail -1 to see the last update applied.

 

[Revan]

When i do a

Code:

grep microcode /var/log/daemon.log | tail -1  

the output is empty.