Minimal shell script adapted from nvidiafan to allow controlling multiple fans independently.
This script doesn't use a config file like nfancurve but expects you to change the script directly with the desired values.
The script relies on the nvidia-settings command provided by the 'nvidia-settings' package on most distros. Make sure this is installed.
For Wayland, you also likely need NVIDIA driver version 520 or higher. Older versions don't support fan control.
It's important the script can be run as super user (sudo), otherwise it won't work because the GPU commands won't have enough permissions to run.
Here's an example of copying and setting up the script:
sudo mkdir /opt/nvidia-multifan
sudo cp ~/Downloads/nvidia-multifan.sh /opt/nvidia-multifan
sudo chmod +x /opt/nvidia-multifan/nvidia-multifan.sh
Of course, you can also put it in a different location.
Then:
sudo vim /opt/nvidia-multifan/nvidia-multifan.sh
The comments in the script file itself should be clear enough, but basically, you need to define your own temperature categories and then add fan speed values (in percentages) to the setfan command.
Of course, it's convenient to have this script running in the background and in that way take over fan control from the GPU.
For that purpose, I've also included a simple systemd unit file. You can copy and enable it like this:
sudo cp ~/Downloads/nvidia-multifan.service /etc/systemd/system
sudo systemctl enable nvidia-multifan.service --now
If the script is in a different location than /opt/nvidia-multifan make sure to adjust the service file for this.