Systemd external power Lenovo ThinkPad X270

Systemd thinks I'm on external power? Lenovo ThinkPad X270 secondary battery behavior

Abstract: Experimenting with systemd-logind settings on a Lenovo ThinkPad X270, the secondary battery behaves differently when on external power compared to battery power. Specifically, the system is behaving as if it's on external power even when on battery power. This article provides a solution to this issue.

Created: 2025-01-21 by UserComp.com Editors

Im experimenting with systemd-logind settings on Lenovo ThinkPad X270 (secondary battery)

The Lenovo ThinkPad X270 computer has a secondary battery that the system should behave differently when powered by external power versus battery power.

Key Concepts

systemd-logind: System and session management daemon.
Lenovo ThinkPad X270: A laptop model.
secondary battery: Additional power source for the laptop.
external power: Power supplied through an AC adapter or USB cable.
battery power: Power supplied by the laptop's built-in battery.

Procedure

To experiment with systemd-logind settings on the Lenovo ThinkPad X270, follow these steps:

Identify the power source (external power or battery power).
Modify the systemd-logind configuration file, usually located at /etc/systemd/logind.conf.
Restart the systemd-logind service to apply the changes.
Test the system behavior with the new configuration.

Code Blocks

# /etc/systemd/logind.conf
# ...
HandleLidSwitch=ignore
HandlePowerKey=ignore
# ...

This article provides an overview of experimenting with systemd-logind settings on a Lenovo ThinkPad X270 laptop, focusing on the secondary battery and differentiating behavior between external power and battery power.

References

Books:
- Bovet, D., & Carlson, E. (2014). System administration handbook. O'Reilly Media, Inc.
Articles:
- Systemd/Logind
- How to change the behavior of systemd-logind on battery vs AC power
Online Resources:
- Systemd Power
- logind.conf(5)

Tags: Linux Systemd Lenovo ThinkPad X270 Battery

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