Optimize power for Ubuntu

optimize_power.sh

#!/bin/bash

# Install necessary packages
sudo apt update
sudo apt install -y cpufrequtils tlp

# Set CPU governor to powersave
echo "Setting CPU governor to powersave..."
for cpu in /sys/devices/system/cpu/cpu[0-9]*; do
    echo powersave | sudo tee $cpu/cpufreq/scaling_governor > /dev/null
done

# Enable and start TLP
sudo systemctl enable tlp
sudo systemctl start tlp

# Add persistent CPU governor setting
echo "GOVERNOR=\"powersave\"" | sudo tee /etc/default/cpufrequtils > /dev/null
sudo systemctl enable cpufrequtils

# Optional: GNOME Shell restart suggestion if it's over 30% CPU
GNOME_PID=$(pgrep -f "gnome-shell")
if [ -n "$GNOME_PID" ]; then
    CPU_USAGE=$(ps -p $GNOME_PID -o %cpu= | awk '{print int($1)}')
    if [ "$CPU_USAGE" -gt 30 ]; then
        echo "GNOME Shell is using $CPU_USAGE% CPU. Consider restarting it."
    fi
fi

echo "✅ Power optimization applied. Reboot recommended."