Corsair AIO Manager - Bash Script | Requires: liquidctl

corsair-quiet.service

# Systemd service file. 
# Save to: /etc/systemd/system/
# Then: 'sudo systemctl enable corsair-quiet.service'
# Delete these four commented lines before saving this file
[Unit]
Description=Corsair AIO Manager
After=multi-user.target

[Service]
Type=oneshot
ExecStart=/usr/local/bin/corsair-quiet.sh --static
RemainAfterExit=yes
# Explicitly run as root
User=root
Group=root
# Add security hardening options
ProtectSystem=strict
ProtectHome=true
PrivateTmp=true
NoNewPrivileges=true
# Restrict hardware access to only what's needed
PrivateDevices=true
DeviceAllow=/dev/hidraw*

[Install]
WantedBy=multi-user.target

corsair-quiet.sh

#!/bin/bash

# Made by: Andreas Nilsen <adde88@gmail> @adde88 © Friday 20. December 2024
# Script to set Corsair H100i Platinum fan speed to dynamic or static mode
# Can be run as root or with sudo privileges only
#
# Dependencies: liquidctl has to be workingly installed and/or exist in the PATH directories
# Recommended to be used in conjunction with a systemd service file, to automatically set fan speed on boot

# Check whether the Corsair AIO is connected, and which model it is
get_corsair_aios() {
    # Define an array of known Corsair AIO models
    declare -A corsair_models=(
        ["0c18"]="Corsair H100i Platinum"
        ["0c17"]="Corsair H115i Pro"
        # Add more models as needed
    )
    
    # Get the product ID from lsusb
    local device_info
    device_info=$(lsusb | grep -i "1b1c:" | head -n1)
    local product_id
    product_id=$(echo "$device_info" | grep -o "1b1c:\([0-9a-f]\{4\}\)" | cut -d: -f2)
    
    if [ -n "$product_id" ] && [ -n "${corsair_models[$product_id]}" ]; then
        echo "${corsair_models[$product_id]}"
    else
        echo "No compatible Corsair AIO's detected"
    fi
}

# Function to extract numbers from string
get_number() {
    echo -e "$1" | grep -o '[0-9]\+\([.][0-9]\+\)*'
}

# Function to display help menu
display_help() {
    echo -e "Corsair AIO Manager:"
    echo -e "This script helps the user set the fan and pump speeds of some of Corsair's AIO water coolers, to either dynamic (default), or static mode (20% fan speed + 70% pump speed.)"
    echo -e "It HAS to be run as either root OR with sudo privileges."
    echo -e ""
    echo -e "Usage: corsair-quiet.sh [OPTION] [INTEGER]\n"
    echo -e "Options:"
    echo -e "  --dynamic, -d    Sets both fan and pump to dynamic mode. (Default)"
    echo -e "  --static,  -s    Sets fan speed to static mode. (20% fan speed + 70% pump speed.)"
    echo -e "  --help,    -h    Displays this help menu"
    return 1
}

# Check if the script is run as root
if [[ $EUID -ne 0 ]]; then
    echo -e "This script must be run as root or with sudo privileges."
    logger "[Corsair AIO Manager]: Script execution failed: Not running as root"
    exit 2
fi

# Default to --dynamic if no arguments are provided
if [[ -z "$1" ]]; then
    set -- "--dynamic"
fi

# Display help menu if -h or --help is provided
if [[ "$1" == "-h" || "$1" == "--help" ]]; then
    display_help
    exit 1
fi

# Get AIO model for logging
AIO_MODEL=$(get_corsair_aios)

# Initialize liquidctl
echo -e "Initializing 'liquidctl' for: '$AIO_MODEL'"
logger "[Corsair AIO Manager]: Initializing 'liquidctl' for: '$AIO_MODEL'"
/usr/local/bin/liquidctl --device 1 initialize > /dev/null 2>&1

# Handle arguments
case "$1" in
    --dynamic|-d)
        echo -e "Setting fan and pump speeds to dynamic mode, with optimized curves..."
        # Set fan curve (optimized for silence and performance)
        /usr/local/bin/liquidctl --device 1 set fan speed 20 20 30 40 35 60 40 75 45 90 50 100 > /dev/null 2>&1
        # Set pump curve (optimized for flow and acoustics)
        /usr/local/bin/liquidctl --device 1 set pump speed 20 60 30 70 35 80 40 90 45 100 > /dev/null 2>&1
        # Log the action
        logger "[Corsair AIO Manager]: Fan and pump speeds set to dynamic mode, with optimized curves"
        ;;
    --static|-s)
        echo -e "Setting fan and pump to static mode (20% fan speed + 70% pump speed)..."
        # Set fans to a quiet 20% speed
        /usr/local/bin/liquidctl --device 1 set fan speed 20 > /dev/null 2>&1
        # Set pump to constant 70% for adequate flow without hot-spots
        /usr/local/bin/liquidctl --device 1 set pump speed 70 > /dev/null 2>&1
        # Log the action
        logger "[Corsair AIO Manager]: Fan set to static 20% speed, pump set to static 70% speed"
        ;;
    *)
        echo -e "Invalid option: $1"
        logger "[Corsair AIO Manager]: Invalid option: $1"
        # Display help menu
        display_help
        ;;
esac