Disable Nvidia on XPS15 with Linux Mint 19.3.md

1. apt install bbswitch

2. /etc/modprobe.d/bbswitch.conf
       options bbswitch load_state=0 unload_state=1

   To run bbswitch without bumblebeed on system startup, do not forget to add bbswitch to /etc/modules-load.d.

   nano /etc/modules-load.d
       bbswitch

3. Put nvidia & nouveau module on blacklist

   nano /etc/modprobe.d/blacklist-gpu.conf
       blacklist nouveau
       options nouveau modeset=0
       install nouveau /bin/true
   sudo update-initramfs -u

4. Reboot
5. Check if bbswitch is off

   cat /proc/acpi/bbswitch

Links

https://wiki.archlinux.org/index.php/Dell_XPS_15_9550#Graphics_Configuration https://wiki.archlinux.org/index.php/Hybrid_graphics#Fully_Power_Down_Discrete_GPU https://wiki.archlinux.org/index.php/Bumblebee#Power_management
https://github.com/Bumblebee-Project/bbswitch

Thanks! Seems to work. Maybe some suggestions to make it clearer (at least on utbuntu):
1 apt install bbswitch
or apt install bbswitch-dkms (for utbuntu LTS)
2.(new file) nano /etc/modprobe.d/bbswitch.conf
options bbswitch load_state=0 unload_state=1

To run bbswitch without bumblebeed on system startup, do not forget to add bbswitch to /etc/modules-load.d/modules

(existing file) nano /etc/modules-load.d/modules
bbswitch

Thanks again!

I also highly recommend PopOS on the XPS15, as it has the whole Nvidia stuff built in. It works like a charm.