How to GPU Passthrough on a Gaming Laptop

REQUIREMENTS

16gb of ram

greater than 8 cores CPU

2 displays

2 keyboards

2 mouses

Arch Linux.

Wayland and KDE.

Packages

yay -S nvidia supergfxctl plasma5-applets-supergfxctl qemu-desktop libvirt edk2-ovmf virt-manager dnsmasq update-grub

Grub Configuration

sudo nano /etc/default/grub

Open Grub Config and Find GRUB_CMDLINE_LINUX_DEFAULT= and add nvidia_drm.modeset=1 intel_iommu=on iommu=pt

Example from my laptop: GRUB_CMDLINE_LINUX_DEFAULT="loglevel=4 nvidia_drm.modeset=1 resume=/dev/disk/by-uuid/1dbe024d-28d7-4f2b-b556-b2969fd0e549 resume_offset=91174912 intel_iommu=on iommu=pt"

Update Grub now.

sudo update-grub

Supergfxctl Configuration

Enable and start the service

sudo systemctl enable --now supergfxd

Edit the Config to Support VFIO

sudo nano /etc/supergfxd.conf

Change vfio_enable from false to true

Change hotplug_type from none to Std

Your config should look like this

{
  "mode": "Hybrid",
  "vfio_enable": true,
  "vfio_save": false,
  "always_reboot": false,
  "no_logind": false,
  "logout_timeout_s": 180,
  "hotplug_type": "Std"
}

Restart the Service Now sudo systemctl restart supergfxd

Reboot

Libvirt Configuration

sudo gnome-text-editor /etc/libvirt/qemu.conf

Remove # from #user = "libvirt-qemu" and replace libvirt-qemu with your username

example #user = "omarhanykasban"

Remove # from #group = "libvirt-qemu"

This is how it should look:

sudo gnome-text-editor /etc/libvirt/libvirtd.conf

Remove # from #unix_sock_group = "libvirt"

and Remove # from #unix_sock_ro_perms = "0777"

This is how it should look:

Enable the service sudo systemctl enable --now libvirtd

Enable network support in libvirt

sudo virsh net-autostart default
sudo virsh net-start default

Add your Self into the libvirt and qemu and kvm groups

sudo usermod -a -G libvirt,qemu,kvm omarhanykasban