Issue with X570 (Aorus Master) / Ryzen 3950x and CPU sensors on Linux?

Software & Operating Systems Linux
1

Does anybody know if there is a known issue with X570 (Aorus Master) / Ryzen 3950x and CPU sensors on Linux?

Support for Ryzen 3 monitoring was supposed to be added in the 5.4 Kernel, I thought, but on Debian 11, Kernel 5.9.0-4-amd64, I still don’t seem to be getting CPU temps.

After running `sudo sensors-detect` and accepting defaults:

sudo sensors
enp4s0-pci-0400
Adapter: PCI adapter
PHY Temperature:  +75.5°C  
MAC Temperature:  +76.7°C  

acpitz-acpi-0
Adapter: ACPI interface
temp1:        +16.8°C  (crit = +20.8°C)

k10temp-pci-00c3
Adapter: PCI adapter
Vcore:       963.00 mV 
Vsoc:          1.01 V  
Tctl:         +49.0°C  
Tdie:         +49.0°C  
Tccd1:        +41.8°C  
Tccd2:        +43.8°C  
Icore:        12.00 A  
Isoc:          6.50 A  

nvme-pci-0300
Adapter: PCI adapter
Composite:    +52.9°C  (low  = -273.1°C, high = +84.8°C)
                       (crit = +84.8°C)
Sensor 1:     +52.9°C  (low  = -273.1°C, high = +65261.8°C)
Sensor 2:     +52.9°C  (low  = -273.1°C, high = +65261.8°C)
2

These are your CPU temps. AMD CPUs are monitored by the k10temp driver.

Tdie is the package temp.
Tccd1 is die 1 temp.
Tccd2 is die 2 temp.

If you want mroe detailed current and power information, check out zenpower:

3

Motherboards usually have a separate “CPU” temperature sensor. I think that’s the one OP is referring to. Motherboard sensors are a whole different thing and sadly there is very little support. But yeah, Tdie is what you really want.