acpi_video doesn't work

[Lukas Ertl]

On Mon, 8 Mar 2004, Daniel O'Connor wrote:

> On Mon, 8 Mar 2004 15:09, Scott Sipe wrote:
> > Module is loaded (current within 2 days)
> >
> > output:
> >
> > # sysctl hw.acpi.video
> > hw.acpi.video.crt0.active: 1
> > hw.acpi.video.lcd0.active: 1
> > hw.acpi.video.tv0.active: 0
> >
> > attempting to change:
> >
> > # sysctl hw.acpi.video.lcd0.active=0
> > hw.acpi.video.lcd0.active: 1 -> 1

I see the same behaviour here.

> I am pretty sure it's a problem with your BIOSes ACPI implementation rather
> than a bug in acpi_vid.
>
> It works here (Dell Inspiron 8600 w/ nVidia FX5200) although the ACPI doesn't
> implement brightness control methods :(

I really wonder that it works for you.  I think I have identified an
integer overflow in this code that should prevent it from working. :-)

cheers,
le

-- 
Lukas Ertl                           http://mailbox.univie.ac.at/~le/
le at FreeBSD.org                       http://people.freebsd.org/~le/