获取 green_saver
.ko
cd /boot/modules
fetch http://files.pfsense.org/jimp/ko-8.3/amd64/green_saver.ko
编辑 /cf/conf/config.xml
<afterbootupshellcmd>/var/vidcontroll.sh</afterbootupshellcmd>
</system>
编辑 /var/vidcontroll
.sh
#!/bin/sh
kldload -v green_saver.ko;
vidcontrol -t 30