How to add amdtemp in kernel

TrueNAS General
1

Dear friends!

I spent enough time to contact you with my problem.

I am setting up my Truenas, but unfortunately my server runs on an AMD processor. As I understand it, for the correct display of the temperature in the system, you need to add sysctl with the command dev.amdtemp.0.sensor_offset. But it gives an error when adding “Sysctl ‘dev.amdtemp.0.sensor_offset’ does not exist in kernel.”

Now the question is, how to add amdtemp to in kernel?

I am a user in this and do not understand how to do this and what commands to execute.

2

Where are you getting this info and what version of TrueNAS Scale are you on?

3

I use the latest version -24.10.0.2

4

I understand that I need to run commands to install amdtemp through the shell, but I can’t figure out how.
If possible, write what needs to be run through the shell.

5

I’m using an amd ryzen 3700x and my temp gets reported correctly.
And to answer your question: truenas is an appliance os and it’s not supported or advices to add anything manually to the install.

1 Like
6

My advice - raise a Bug ticket, upload the dump-file and see what iX say about this. Best case they can advise how to make it work - worst case they will hopefully build it into the next minor version.

7

You can’t install a FreeBSD device driver in Linux. Whatever guide or steps you have found are likely for TrueNAS Core (FreeBSD based) and not TrueNas Scale (Linux based).

Let’s say there is a way to set the temperature offset in Scale, what value would you set it to? How do you know the temperature is incorrect and what the correct temperature offset should be?

8

Thank you all for your answers, this is very useful for me.

The average temperature in idle mode shows about 80 Celsius. The actual temperature does not exceed 30С. The shift is 50С upwards. Can this be fixed?

9

I will try to do this, but it may take a lot of time and the result may never be achieved.

10

That’s a weird one, my ryzen cpu idles at 35-39°C depending on the room temperature.
Which cpu do you use? Ryzen or older AMD cpu?

11

Longstanding issue with old Ryzen not reporting temperature correctly. File a bug report, but don’t expect it to be fixed rapidly.

12

But that should only be a problem on core, for scale even my oldest 1600x never had problems with reporting the correct temps - even when scale was still in its first late beta phase.

13

very old :slight_smile: processor - AMD Athlon II, but for my tasks it is enough.

14

Athlon II? That explains it, but the odds that fixing support would be considered important, or even relevant, is close to zero.

15

I completely agree, that’s why I created a topic here, and I hope for the community. Which can provide a solution.

I thought maybe there is a possibility to shift the temperature data.

My server at 100% CPU load shows a temperature close to 100C (although the real temperature does not exceed 50C) and in the TrueNAS SCALE system the temperature protection is triggered and turns off the server.

16

Maybe there is a way to turn off the temperature control?
or
Maybe there is a way to shift (adjust) the temperature?