arch

j.sh

#!/bin/sh

cd /
umount /sys/firmware/efi/efivars/
mount -t efivarfs rw /sys/firmware/efi/efivars/
cd /sys/firmware/efi/efivars/
chattr -i "gpu-power-prefs-*"
rm gpu-power-prefs-*

printf "\x07\x00\x00\x00\x01\x00\x00\x00" > /sys/firmware/efi/efivars/gpu-power-prefs-fa4ce28d-b62f-4c99-9cc3-6815686e30f9
chattr +i "/sys/firmware/efi/efivars/gpu-power-prefs-fa4ce28d-b62f-4c99-9cc3-6815686e30f9"

cd /
umount /sys/firmware/efi/efivars/

while true; do
  read -p "Do you wish to reboot?" yn
  case $yn in
    [Yy]* ) reboot; break;;
    [Nn]* ) exit;;
    * ) echo "Please answer yes or no.";;
  esac
done