---
name: "acpithinkpad"
section: "4"
platform: "openbsd"
package: "man"
version: "8.0-current-20261101"
release: "OpenBSD 8.0-current (2026-11-01)"
platforms: ["openbsd"]
url: "https://new.carta.tech/acpithinkpad"
---

# acpithinkpad(4)

IBM/Lenovo ThinkPad ACPI support

## NAME

**acpithinkpad** – IBM/Lenovo ThinkPad ACPI support

## SYNOPSIS

**acpithinkpad\* at acpi?**

## DESCRIPTION

The **acpithinkpad** driver provides ACPI support for IBM/Lenovo ThinkPad laptops. It responds to various hotkey button presses such as the brightness adjustment and wireless toggle keys.

The **acpithinkpad** driver sets up various sensors that indicate the current state of certain hardware devices present on ThinkPad laptops. These include temperature sensors and fan rotational speed sensors, as well as a sensor indicating the current state of the port replicator device. These sensors can be used with [sensorsd(8)](/sensorsd/8.md) to perform events on sensor state changes. Note that the port replicator indicator will report a state of UNKNOWN until the first port replicator connect/disconnect event is received.

## SEE ALSO

[acpi(4)](/acpi/4.md), [intro(4)](/intro/4.md), [sensorsd(8)](/sensorsd/8.md)

## HISTORY

The **acpithinkpad** driver first appeared in OpenBSD 4.4.