sysctl hw.acpi.video.lcd0.active

[takawata at jp.freebsd.org]

In message <20040221174132.53AA243D1D at mx1.FreeBSD.org>, Randy Bush $B$5$s$$$o$/(B:
>the last hack to rc.suspend to make power go really low on
>my thinkpad t40p was
>
>    # HACK HACK HACK
>    /usr/X11R6/bin/xset -display :0 dpms force off
>    sleep 3
>    sysctl hw.acpi.video.lcd0.active=0
>    sleep 1
>    sysctl hw.acpi.cpu.throttle_state=1
>    # KCAH KCAH KCAH
>
>recently, i started getting
>
>    sysctl: unknown oid 'hw.acpi.video.lcd0.active'
>
>and
>
>    # sysctl -a | egrep '(video|lcd)'
>    #
>
>any clues?

Stock ACPI module does not have ACPI video extension feature.
I know some patches are posted to add the feature.
If you had used one of them, make sure you patched your source.