Set NVIDIA fan speed under fake X server

setfanspeed.sh

# This needs to be called from xinit
# See https://gist.github.com/RobDeBagel/0e126a56b0ee9f23551a98fb258414c
# Set fan speeds appropriately. The curve is tailored to my own environment
# Also set clock speeds

#!/bin/bash


setFanSpeed() {
        eval "nvidia-settings -a [gpu:$2]/GPUFanControlState=1 -a [fan:$2]/GPUTargetFanSpeed=$1" > /dev/null
#       echo "Updating fans speed to $1 on GPU $2"
}

cleanup() {
        eval "nvidia-settings -a [gpu:0]/GPUFanControlState=0"
        eval "nvidia-settings -a [gpu:1]/GPUFanControlState=0"
        eval "nvidia-settings -a [gpu:2]/GPUFanControlState=0"
        eval "nvidia-settings -a [gpu:3]/GPUFanControlState=0"
        exit
}

declare -i gpuTemp

# Set cleanup function (clean up and exit when interrupted)
trap cleanup 1 2 3 15 20

checkGpu(){
#        echo "Checking GPU $1"
        gpuTemp=$(nvidia-settings -q gpucoretemp | grep '^  Attribute' | grep "gpu:$1" | \
                head -n 1 | perl -pe 's/^.*?(\d+)\.\s*$/\1/;')
#        echo "Current GPU $1 temperature: $gpuTemp"

        # Set GPU fan speed
        if   [ $gpuTemp -ge 80 ]; then
                setFanSpeed 100 $1
        elif   [ $gpuTemp -ge 70 ]; then
                setFanSpeed 75 $1
        elif [ $gpuTemp -ge 65 ]; then
                setFanSpeed 60 $1
        elif [ $gpuTemp -ge 60 ]; then
                setFanSpeed 45 $1
        elif [ $gpuTemp -ge 55 ]; then
                setFanSpeed 30 $1
        elif [ $gpuTemp -ge 50 ]; then
                setFanSpeed 20 $1
        else
                setFanSpeed 15 $1
        fi

}

/usr/bin/nvidia-settings -a '[gpu:0]/GPUGraphicsClockOffset[2]=100'
/usr/bin/nvidia-settings -a '[gpu:0]/GPUMemoryTransferRateOffset[2]=1400'
/usr/bin/nvidia-settings -a '[gpu:1]/GPUGraphicsClockOffset[2]=100'
/usr/bin/nvidia-settings -a '[gpu:1]/GPUMemoryTransferRateOffset[2]=1400'
/usr/bin/nvidia-settings -a '[gpu:2]/GPUGraphicsClockOffset[2]=100'
/usr/bin/nvidia-settings -a '[gpu:2]/GPUMemoryTransferRateOffset[2]=1400'
/usr/bin/nvidia-settings -a '[gpu:3]/GPUGraphicsClockOffset[2]=100'
/usr/bin/nvidia-settings -a '[gpu:3]/GPUMemoryTransferRateOffset[2]=140'

while : # Loop
do
        checkGpu 0
        checkGpu 1
        checkGpu 2
        checkGpu 3
        sleep 5
done