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.Dd January 25, 2008
.Dt VALD 4 i386
.Os
.Sh NAME
.Nm vald
.Nd Toshiba Programmable I/O controller
.Sh SYNOPSIS
.Cd "vald* at acpi?"
.Sh DESCRIPTION
Some Toshiba computers have a special I/O controller that handles various
interface devices.
This special I/O controller is accessed by the
.Dq GHCI
ACPI method.
The
.Nm
driver provides some support for it.
.Pp
The
.Nm
driver handles the following hot-keys:
.Pp
.Bl -tag -compact -offset indent -width "Fn+F5"
.It Fn+F5
Switch between LCD and External Video output.
.It Fn+F6
Decrease LCD brightness.
.It Fn+F7
Increase LCD brightness.
.It Fn+F8
Switch fan (ON/OFF).
.El
.Pp
The
.Nm
driver has only been tested on the Libretto L3 and on the Portege 3440.
.Sh SEE ALSO
.Xr acpi 4
.Sh HISTORY
The
.Nm
driver appeared in
.Nx 1.6 .
.Sh BUGS
.Nm
may have problems with X11 when switching between LCD
and External Video output.