This works great with my Compaq Presario 2800 laptop. Two comments:
1) I think this should depend on pciutils.
2) My ACPI setup:
/etc/acpi/events/lid:
event=button/lid
action=/etc/acpi/lid.sh
/etc/acpi/lid.sh:
if grep -q closed /proc/acpi/button/lid/*/state; then
/usr/sbin/radeontool light off
else
/usr/sbin/radeontool light on
fi
Seo Sanghyeon