理論上適合類似的雙顯示卡切換的筆記本，使用其他筆記本的同學請自行測試可用性
準備工作：安裝了ATI閉源驅動的請先解除安裝，在BIOS裡禁用了雙顯示卡切換的請先開啟
首先在終端下執行這條命令：

cat /sys/kernel/debug/vgaswitcheroo/switch

如果遇到下圖情況  開啟root之後即可

如果類似這樣（主要是兩個狀態都是Pwr）：

0:IGD:+:Pwr:0000:00:02.0
1:DIS: :Pwr:0000:01:00.0

#!/bin/bash
 
if [ "$(whoami)" != "root" ]; then
   echo "Use as root"
   exit 1
fi
 
if [ -z "$1" ]; then
        cmd="OFF"
else
   if [ "$1" = "-i" ]; then
      cmd="DIGD"
   elif [ "$1" = "-d" ]; then
      cmd="DDIS"
   else
           cmd=$1
   fi
fi
 
if ([ "$cmd" != "OFF" ] && [ "$cmd" != "DDIS" ] && [ "$cmd" != "DIGD" ]); then
        echo "Bad Command!"
        exit 1
fi
 
echo "$cmd" > /sys/kernel/debug/vgaswitcheroo/switch
cat /sys/kernel/debug/vgaswitcheroo/switch
 

#!/bin/bash
 
if [ "$1" != "start" ]; then
   exit;
fi
 
/usr/local/sbin/vgaswitcher
/usr/local/sbin/vgaswitcher -i

sudo chmod +x /usr/local/sbin/vgaswitcher /etc/init.d/vgaswitch && sudo update-rc.d vgaswitch defaults

cat /sys/kernel/debug/vgaswitcheroo/switch
 

0:IGD:+:Pwr:0000:00:02.0
1:DIS: :Off:0000:01:00.0