Pointing Devices and Keyboard - Windows Vista

2–18 Pointing Devices and Keyboard
Keyboard
Setting the ambient light sensor
You can turn the ambient light sensor on and off in 2 ways:
By pressing the fn+f11 hotkey.
By right-clicking Quick Launch Buttons software icon in
the notification area, at the far right of the taskbar, and
clicking Turn Ambient light sensor on/off.
The Quick Launch Buttons software must be installed before it
can be used to turn the ambient light sensor on and off or to
display the software icon in the notification area of the taskbar.