---
name: "acpi_sony"
section: "4"
platform: "linux"
package: "freebsd-manpages"
version: "6.0-5"
release: "Debian 4.0 (Etch)"
platforms: ["linux", "freebsd"]
url: "https://new.carta.tech/acpi_sony"
---

# acpi\_sony(4)

ACPI notebook controller driver for Sony laptops

## NAME

**acpi\_sony** – ACPI notebook controller driver for Sony laptops

## SYNOPSIS

**device acpi\_sony**

## DESCRIPTION

The **acpi\_sony** driver provides support for the notebook controller in Sony laptops.

## SYSCTLS

The following sysctl is currently implemented:

- *dev.acpi\_sony.0.brightness*

  Current brightness level of the display.

## HISTORY

The **acpi\_sony** driver first appeared in FreeBSD 6.0.

## SEE ALSO

[acpi(4)](/acpi/4.md), [sysctl(8)](/sysctl/8.md)

## AUTHORS

The **acpi\_sony** driver was written by Takanori Watanabe ⟨takawata@FreeBSD.org⟩.