/prepare/begin/start.sh

#!/bin/bash
# Helpful to read output when debugging
set -x

#sudo gnome-session-quit --logout --no-prompt
#sleep 30

# Stop display manager
systemctl isolate multi-user.target
systemctl stop display-manager.service
systemctl stop sddm.service
systemctl stop gdm.service

sudo killall gdm-x-session

sudo pkill -f gdm-wayland-session
sudo pkill -f gnome-shell
sudo pkill -f Xorg
sudo pkill -f Xwayland
sudo pkill -f gdm
sudo pkill -f nvidia

sleep 2
modprobe -r nvidia_uvm nvidia_drm nvidia_modeset nvidia

sleep 2
sudo rmmod nvidia_uvm
sudo rmmod nvidia_drm
sudo rmmod nvidia_modeset
sudo rmmod nvidia

# Unbind VTconsoles
echo 0 > /sys/class/vtconsole/vtcon0/bind

# Unbind EFI-Framebuffer
echo efi-framebuffer.0 > /sys/bus/platform/drivers/efi-framebuffer/unbind

# Avoid a Race condition by waiting 5 seconds. This can be calibrated to be shorter or longer if required for your system
sleep 5

# Unbind the GPU from display driver
virsh nodedev-detach pci_0000_1c_00_0
virsh nodedev-detach pci_0000_1c_00_1

# Load VFIO Kernel Module
modprobe vfio-pci