asus-charge-daemon

A daemon exposing D-Bus services for managing the charge level of recent ASUS notebooks.

Recent ASUS notebooks come with a Windows application to set the maximum battery charge level, in order to reduce stress on the battery and prolong its lifespan. On Linux kernels >= version 5.4, the asus_nb_wmi kernel module exposes a sysfs object to manage this setting.

asus-charge-daemon is a system service that runs in the background, exposing a D-Bus interface on the System Bus, enabling userspace applications to manage the maximum battery charge level.

Installation

asus-charge-daemon should work with any device running a recent kernel (>= 5.4) with the asus_nb_wmi module loaded. Use lsmod | grep asus_nb_wmi to check; if you see a line like asus_nb_wmi 32768 0, then the module is running.

It has been tested with the following ASUS notebooks:

• ASUS VivoBook 15 X512DA

A Python version >= 3.7 is necessary to run this daemon. Most Linux distributions come with the right version. To verify that Python is installed on Debian/Ubuntu-based distributions, use apt:

sudo apt install python3

On Arch-based distributions, use pacman:

sudo pacman -Syu python

On RHEL/Fedora-based distributions, use rpm:

sudo rpm -i python3

Manual

A very rudimentary installation script is included for easy installation. It will copy the files to the appropriate places, install the Python modules, and run the system service.

Download and run the installation script:

curl https://raw.githubusercontent.com/cforrester1988/asus-charge-daemon/main/install.py -o install.py
chmod +x install.py
sudo ./install.py install

To update, run the installation script again, as above. To uninstall:

sudo ./install.py uninstall

git version

Clone the git repository locally:

$ git clone https://github.com/cforrester1988/asus-charge-daemon.git
Cloning into 'asus-charge-daemon'...

Navigate to the directory you cloned the repository into, and run the installation script. Append local to work with the cloned package, instead of downloading it from PyPI.

cd asus-charge-daemon
sudo ./install.py install local

To update, pull the latest changes and reinstall:

git pull
sudo ./install.py reinstall local

To uninstall, run the installation script again:

sudo ./install.py uninstall

Version history

• 0.3.0 (2021-02-07)

  • (feature) Desktop notifications
  • (feature) Monitor threshold for outside changes
  • (feature) Monitor config for changes

• 0.2.0 (2021-01-23)

  • Initial public release.