DELL D610 lid and backlight

[Mark Diekhans]

Mark Andrews <Mark_Andrews at isc.org> writes:
> 	I have a problem if I enable acpi on my dell d610.  The backlight
> 	goes off and doesn't come back on if the lid is closed.  This is
> 	independent of whether debug.acpi.disabled="lid" is set or not.

For the Dell X1, 

enable acpi_video in loader.conf: /boot/loader.conf with:
acpi_video_load="YES"

add this to /etc/devd.conf:

# lid open/close events
notify 10 {
	match "system"		"ACPI";
	match "subsystem"	"Lid";
        action "/etc/rc.lid $notify";
};

/etc/rc.lid is:

#!/bin/sh
# deal with lid switch events

if [ x$1 = x0x00 ]; then
	logger -t Lid Closed at `date`
	sysctl hw.acpi.video.out0.active=0
else
	logger -t Lid Opened at `date`
	sysctl hw.acpi.video.out0.active=1
fi