need to disable nvidia for power saving

ksteakers

Powertop on my laptop is reporting a battery usage of 21-22w. I believe this is related to Optimus and the nvidia card not being turned off.
I tried following the instructions at https://discuss.getsol.us/d/73-what-are-your-favorite-battery-saving-tweaks-on-solus/6 but quickly run into a problem when it says /etc/modules is not a folder.
Can anybody point me in the right direction? It's an Asus k53S.

ksteakers

im silly. had to make the folder first.
So the steps would be
sudo mkdir /etc/modprobe.d/
sudo nano /etc/modprobe.d/bbswitch.conf and write next: options bbswitch load_state=0 unload_state=1

And then create /etc/modules-load.d/bbswitch.conf and write: bbswitch
after a reboot
sudo dmesg | grep bbswitch
should say bbswitch: Succesfully loaded. Discrete card 0000:01:00.0 is off