Add info about some systems that refuse to switch via sysctl.

MFC after:	1 day
This commit is contained in:
Nate Lawson 2004-11-09 04:42:14 +00:00
parent cbd886065b
commit 75478544cb
Notes: svn2git 2020-12-20 02:59:44 +00:00
svn path=/head/; revision=137439

View file

@ -25,7 +25,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd March 3, 2004
.Dd November 8, 2004
.Dt ACPI_VIDEO 4
.Os
.Sh NAME
@ -49,7 +49,7 @@ or
.Va tv :
.Bl -tag -width indent
.It Va hw.acpi.video. Ns Ao Ar device Ac Ns Va .active
Current state of the device.
Current state of the output device.
.It Va hw.acpi.video. Ns Ao Ar device Ac Ns Va .levels
List of supported brightness levels.
.It Va hw.acpi.video. Ns Ao Ar device Ac Ns Va .brightness
@ -81,3 +81,9 @@ driver was written by
.An Taku YAMAMOTO Aq taku@cent.saitama-u.ac.jp .
This manual page was written by
.An Mark Santcroos Aq marks@ripe.net .
.Sh 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,
.Xr acpi_toshiba 4 )
must be used instead.