acpi_sony(4)

acpi_sony4

Acpi notebook controller driver for sony laptops

Usage

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"

Overview

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

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.

Releases

39 releases since FreeBSD 8.0-RELEASE; the text changed 25 times.

  1. 8.0
  2. 8.1
  3. 8.2
  4. 8.3
  5. 8.4
  6. 9.0
  7. 9.1
  8. 9.2
  9. 9.3
  10. 10.0
  11. 10.1
  12. 10.2
  13. 10.3
  14. 10.4
  15. 11.0
  16. 11.1
  17. 11.2
  18. 11.3
  19. 11.4
  20. 12.0
  21. 12.1
  22. 12.2
  23. 12.3
  24. 12.4
  25. 13.0–13.2
  26. 13.3–16.0

History

The acpi_sony driver first appeared in FreeBSD 6.0.

Authors

The acpi_sony driver was written by Takanori Watanabe ⟨[email protected]⟩.

From base 16.0-CURRENT-20261027-61c70dc16a79 in FreeBSD 16.0-CURRENT (2026-10-27). Parsed by carta from the page's mdoc source.