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ACPI_VIDEO (4) | Special files and drivers | Unix Manual Pages | :man

NAME

acpi_video - ACPI Video Extensions driver

CONTENTS

Synopsis
Description
Sysctl Variables
See Also
History
Authors
Bugs

SYNOPSIS


.Cd "device acpi_video"

DESCRIPTION

This driver uses the ACPI Video Extensions to control display switching and backlight brightness. The availability of the sysctl(8) variables depends on the functions offered by the host’s ACPI implementation.

SYSCTL VARIABLES

The following sysctls are currently implemented, where <device> is crt, lcd, or tv:
hw.acpi.video.<device.active>
Current state of the output device.
hw.acpi.video.<device.levels>
List of supported brightness levels.
hw.acpi.video.<device.brightness>
Current brightness level of the device.
hw.acpi.video.<device.fullpower>
Preset brightness level to be used in full power mode.
hw.acpi.video.<device.economy>
Preset brightness level to be used in economy mode.

Defaults for these variables can be set in sysctl.conf(5), which is parsed at boot-time.

SEE ALSO

acpi(4), loader.conf(5), sysctl.conf(5), sysctl(8)

HISTORY

AUTHORS

BUGS

acpi_toshiba(4))


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