acpithinkpad —
IBM/Lenovo ThinkPad ACPI support
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) 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.
The acpithinkpad driver first appeared in
OpenBSD 4.4.