acpi_sony(4) [freebsd man page]

ACPI_SONY(4)						   BSD Kernel Interfaces Manual 					      ACPI_SONY(4)

NAME

     acpi_sony -- ACPI notebook controller driver for Sony laptops

SYNOPSIS

     To compile this driver into the kernel, place the following line in your kernel configuration file:

	   device acpi_sony

     Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

	   acpi_sony_load="YES"

DESCRIPTION

     The acpi_sony driver provides support for the notebook controller in Sony laptops.  Note that not all features will work on all laptop mod-
     els.

SYSCTLS

     The following sysctl nodes are currently implemented:

     dev.acpi_sony.0.brightness
	     Current brightness level of the display.

     dev.acpi_sony.0.brightness_default
	     Default brightness level of the display (survives reboot).

     dev.acpi_sony.0.contrast
	     Current contrast level of the display.

     dev.acpi_sony.0.bass_gain
	     Enable or disable the Bass Gain feature.

     dev.acpi_sony.0.cdp
	     Turns the CD power on or off.

     dev.acpi_sony.0.azp
	     Turns the audio power on or off.

     dev.acpi_sony.0.lnp
	     Turns the wired network interface power on or off.

SEE ALSO

     acpi(4), sysctl(8)

HISTORY

     The acpi_sony driver first appeared in FreeBSD 6.0.

AUTHORS

     The acpi_sony driver was written by Takanori Watanabe <takawata@FreeBSD.org>.

BSD
								 February 8, 2010							       BSD

ACPI_VIDEO(4)						   BSD Kernel Interfaces Manual 					     ACPI_VIDEO(4)

NAME

     acpi_video -- ACPI Video Extensions driver

SYNOPSIS

     device acpi_video

DESCRIPTION

     This driver uses the ACPI Video Extensions to control display switching and backlight brightness.	The availability of the sysctl(8) vari-
     ables 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

     The acpi_video driver first appeared in FreeBSD 5.3.

AUTHORS

     The acpi_video driver was written by Taku YAMAMOTO <taku@cent.saitama-u.ac.jp>.  This manual page was written by Mark Santcroos
     <marks@ripe.net>.

BUGS

     Some systems only perform output switching via SMM even though they export the proper information via ACPI.  On such systems, the proper
     hotkeys or OEM driver (for example, acpi_toshiba(4)) must be used instead.

BSD
								 November 8, 2004							       BSD