power-mode-switcher

Power Mode Switcher

Automatically switch power profiles between Balanced and Power Saver based on laptop power status (plugged/unplugged), including on boot and resume — now with cross‑distro support!

📂 Repository Layout

power-mode-switcher/
├── README.md            # This file
├── install.sh           # Cross‑distro installation script
├── uninstall.sh         # Uninstallation script
├── LICENSE
└── src/
├── power-mode-switch.sh   # Main switching script
├── 99-power-mode.rules    # udev rule
└── power-mode.service     # systemd service definition

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⚙️ Supported Distributions

• Debian / Ubuntu / Zorin (APT)
• Arch / Manjaro / EndeavourOS (Pacman)
• Fedora / RHEL / CentOS (DNF / tuned‑ppd)

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🛠️ Prerequisites

• A modern GNOME or KDE desktop with powerprofilesctl support
• bash, udev, systemd (default on all supported distros)
• Root or sudo privileges to install/uninstall

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🚀 Installation

1. Clone & enter repo

   git clone https://github.com/md8-habibullah/power-mode-switcher.git
   cd power-mode-switcher
   

2. Make scripts executable

   chmod +x install.sh uninstall.sh src/power-mode-switch.sh
   

3. Run the installer

   ./install.sh
   

   You’ll see coloured, step‑by‑step output:

   • Detects your package manager (apt, pacman, or dnf)
   • Installs power-profiles-daemon (or swaps in tuned‑ppd on Fedora ≥ 41)
   • Copies the switch script, udev rule, and systemd unit into place
   • Reloads systemd & udev, then enables all services

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🔍 Testing & Manual Use

1. Automatic switching

   • Plug or unplug your AC adapter → runs automatically
   • Suspend & resume → runs on wake

2. Check current profile

   powerprofilesctl get
   

   (on Fedora/RHEL with tuned‑ppd you can also run tuned-adm active)

3. Manual invocation

   sudo /usr/local/bin/power-mode-switch.sh
   

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🛠 Uninstallation

In the repo directory:

./uninstall.sh

This will:

1. Disable & remove the power-mode.service unit
2. Remove /etc/udev/rules.d/99-power-mode.rules
3. Remove /usr/local/bin/power-mode-switch.sh
4. Reload systemd & udev rules

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🔧 Customization

• AC device name If your AC path differs, edit in src/power-mode-switch.sh:

  for P in /sys/class/power_supply/ADP* /sys/class/power_supply/AC* /sys/class/power_supply/ACAD*; do
    …
  done
  

• Enable logging Uncomment in power-mode-switch.sh:

  # echo "$(date +'%F %T'): AC=$STATUS → $(powerprofilesctl get)" >> /var/log/power-mode.log
  

  Ensure /var/log/power-mode.log is writable by root.

• Custom profiles Replace balanced/power-saver with any profile name supported by your system.

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🆘 Troubleshooting

• No switching on plug/unplug

  udevadm monitor --udev
  

  Verify POWER_SUPPLY_ONLINE events and that your rule matches the device.

• Service errors on boot/resume

  journalctl -u power-mode.service -b
  systemctl status power-mode.service
  

• Permissions Ensure /usr/local/bin/power-mode-switch.sh is chmod +x and owned by root.

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Supports Debian/Ubuntu, Zorin, Mint, Arch, Manjaro, EndeavourOS, Fedora, CentOS, RHEL and any system with systemd & udev. Created by Md. Habibullah (md8-habibullah)

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