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Zenpower
Zenpower3 is a Linux kernel driver for reading temperature, voltage(SVI2), current(SVI2) and power(SVI2) for AMD Zen family CPUs, now with Zen 3 support!
Make sure that your Linux kernel have support for your CPUs as Zenpower is using kernel function amd_smn_read to read values from SMN. A fallback method (which may or may not work!) will be used when it is detected that kernel function amd_smn_read lacks support for your CPU.
For AMD family 17h Model 70h (Ryzen 3000) CPUs you need kernel version 5.3.4 or newer or kernel with this patch: https://patchwork.kernel.org/patch/11043277/
Installation
You can install this module via dkms.
Installation commands for Ubuntu
sudo apt install dkms git build-essential linux-headers-$(uname -r)
cd ~
git clone https://github.com/Ta180m/zenpower3.git
cd zenpower3
sudo make dkms-install
Module activation
Because zenpower is using same PCI device as k10temp, you have to disable k10temp first.
- Check if k10temp is active.
lsmod | grep k10temp - Unload k10temp
sudo modprobe -r k10temp - (optional*) blacklist k10temp:
sudo bash -c 'sudo echo -e "\n# replaced with zenpower\nblacklist k10temp" >> /etc/modprobe.d/blacklist.conf' - Activate zenpower
sudo modprobe zenpower
*If k10temp is not blacklisted, you may have to manually unload k10temp after each restart.
Sensors monitoring
You can use this app: zenmonitor, or your favourie sensors monitoring software
Update instructions
- Unload zenpower
sudo modprobe -r zenpower - Goto zenpower directory
cd ~/zenpower - Uninstall old version
sudo make dkms-uninstall - Update code from git
git pull - Install new version
sudo make dkms-install - Activate zenpower
sudo modprobe zenpower
Help needed
It would be very helpful for me for further development of Zenpower if you can share debug data from zenpower. Read more
Notes
- Some users reported that a restart is needed after module installation
- If you are having trouble compiling zenpower under Ubuntu 18.04 (or older) with new upstream kernel, see #23
- The meaning of raw current values from SVI2 telemetry are not standardised so the current/power readings may not be accurate on all systems (depends on the board model).