This script detects the ROG Falchion System Control input device and creates a udev rule to disable it under Wayland. It then reloads udev rules and optionally reboots the system.

disable_falchion_system_control.sh

#!/bin/bash
set -e  # Exit on error

# Ensure script is run as root
if [[ $EUID -ne 0 ]]; then
    echo "Error: This script must be run as root (use sudo)." >&2
    exit 1
fi

echo "Detecting ROG Falchion System Control device..."

# Find the exact device name using libinput
DEVICE_NAME=$(libinput list-devices | grep -E -A 1 "ASUSTeK ROG FALCHION System Control" | grep -Eo "Device:\s+.*" | awk -F 'Device: ' '{print $2}')

if [[ -z "$DEVICE_NAME" ]]; then
    echo "Error: ROG Falchion System Control device not found. Ensure it is connected." >&2
    exit 1
fi

echo "Detected device: '$DEVICE_NAME'"

# Define udev rule file
UDEV_FILE="/etc/udev/rules.d/99-disable-falchion-system-control.rules"
UDEV_RULE="SUBSYSTEM==\"input\", ATTRS{name}==\"$DEVICE_NAME\", ENV{LIBINPUT_IGNORE_DEVICE}=\"1\""

# Check if the rule already exists
if [[ -f "$UDEV_FILE" ]] && grep -Fxq "$UDEV_RULE" "$UDEV_FILE"; then
    echo "The udev rule is already in place. No changes needed."
else
    echo "Creating udev rule to disable '$DEVICE_NAME'..."
    echo "$UDEV_RULE" | tee "$UDEV_FILE" > /dev/null
fi

# Apply the changes
echo "Applying udev rules..."
udevadm control --reload-rules
udevadm trigger

# Verify if the device is now ignored
echo "Verifying that the device is ignored..."
if libinput list-devices | grep -q "$DEVICE_NAME"; then
    echo "Warning: Device still appears in libinput. A reboot may be required." >&2
    NEEDS_REBOOT=1
else
    echo "Success! The device is now ignored by libinput."
    NEEDS_REBOOT=0
fi

# Prompt for reboot only if necessary
if [[ $NEEDS_REBOOT -eq 1 ]]; then
    read -p "Reboot now for changes to fully take effect? (y/N): " REBOOT
    if [[ "$REBOOT" =~ ^[Yy]$ ]]; then
        echo "Rebooting..."
        reboot
    else
        echo "Reboot later to apply changes."
    fi
fi