LID Switch Driver

Description

The lid switch is a hardware component on laptops that triggers power state changes (sleep, hibernate, lock) when the lid is closed. On Linux, systemd’s logind daemon manages lid switch events via /etc/systemd/logind.conf. The setup-hibernate tool provides hibernation support configuration.

Overview

This role addresses a common issue on Linux laptops: closing the lid while docked or plugged in leads to unintended sleep or hibernation. It installs the necessary hibernation tools and updates /etc/systemd/logind.conf to:

  • Hibernate on lid close when on battery

  • Lock the session when on AC power or docked

Cosmos

The diagram places LID Switch Driver in the Infinito.Nexus cosmos: the components it deploys (capabilities), the central services it consumes (dependencies), and its outward reach (federation and bridged external networks).

flowchart LR
    subgraph role [drv-lid-switch 💻]
        svc_lid_switch["lid-switch"]
    end

Solid 1:1 edges are fixed relationships; dashed 0..1 edges are conditional (enabled only in matching deployments); red 0..0 edges are turned off in this role. Node markers show the role’s deploy modes (💻 host, 🐳 compose, 🐝 swarm); ❌ marks a service that is explicitly turned off, and ⚙️ an Ansible role dependency declared in meta/main.yml.

Purpose

The purpose of this role is to enforce a consistent and predictable lid switch behavior across power states, improving usability on laptops that otherwise behave unpredictably when the lid is closed.

Features

  • Installs setup-hibernate: Uses pkgmgr to install and initialize hibernation support.

  • Systemd Integration: Applies proper logind.conf settings for lid switch handling.

  • Power-aware Configuration: Differentiates between battery, AC power, and docked state.

  • Idempotent Design: Ensures safe re-runs and minimal unnecessary restarts.

Quick Setup

Development

Clone, set up the workstation, and deploy LID Switch Driver onto the local stack:

git clone https://github.com/infinito-nexus/core.git
cd core
make onboard
make compose-deploy mode=reinstall apps=drv-lid-switch full_cycle=false

Production

Install LID Switch Driver directly onto the target machine: clone the repository, install the OS prerequisites and the repository toolchain, then deploy against localhost over a local connection (no SSH, no container):

git clone https://github.com/infinito-nexus/core.git
cd core
bash scripts/install/package.sh
make install
source scripts/meta/env/load.sh

APP=drv-lid-switch
DOMAIN=<your-domain>
TLS_MODE=self_signed
SSH_PUBLIC_KEY="<your-ssh-public-key>"
INVENTORY=inventories/production
infinito administration inventory provision "$INVENTORY" \
  --inventory-file "$INVENTORY/devices.yml" \
  --host localhost \
  --include "$APP" \
  --vars "{\"TLS_MODE\": \"$TLS_MODE\", \"DOMAIN_PRIMARY\": \"$DOMAIN\", \"users\": {\"administrator\": {\"authorized_keys\": [\"$SSH_PUBLIC_KEY\"]}}}"
infinito administration deploy dedicated "$INVENTORY/devices.yml" \
  --password-file "$INVENTORY/.password" \
  --diff -vv

Credits

Implemented by Kevin Veen-Birkenbach. Part of the Infinito.Nexus Project and maintained by Kevin Veen-Birkenbach. Licensed under the Infinito.Nexus Community License (Non-Commercial).