Black screen and then monitor no signal on single gpu passthrough. I tried dumping the vbios and removing the part of it that you need to remove but it didnt help
MY XML
<domain type="kvm">
<name>win11</name>
<uuid>60cd501b-b449-41a0-b8fa-25df375eb623</uuid>
<metadata>
<libosinfo:libosinfo xmlns:libosinfo="http://libosinfo.org/xmlns/libvirt/domain/1.0">
<libosinfo:os id="http://microsoft.com/win/11"/>
</libosinfo:libosinfo>
</metadata>
<memory unit="KiB">8388608</memory>
<currentMemory unit="KiB">8388608</currentMemory>
<vcpu placement="static">9</vcpu>
<os firmware="efi">
<type arch="x86_64" machine="pc-q35-11.0">hvm</type>
<firmware>
<feature enabled="no" name="enrolled-keys"/>
<feature enabled="no" name="secure-boot"/>
</firmware>
<loader readonly="yes" type="pflash" format="raw">/usr/share/edk2/x64/OVMF_CODE.4m.fd</loader>
<nvram template="/usr/share/edk2/x64/OVMF_VARS.4m.fd" templateFormat="raw" format="raw">/var/lib/libvirt/qemu/nvram/win11_VARS.fd</nvram>
<boot dev="hd"/>
</os>
<features>
<acpi/>
<apic/>
<hyperv mode="custom">
<relaxed state="on"/>
<vapic state="on"/>
<spinlocks state="on" retries="8191"/>
<vpindex state="on"/>
<runtime state="on"/>
<synic state="on"/>
<stimer state="on"/>
<frequencies state="on"/>
<tlbflush state="on"/>
<ipi state="on"/>
<evmcs state="on"/>
<avic state="on"/>
</hyperv>
<vmport state="off"/>
<smm state="on"/>
</features>
<cpu mode="host-passthrough" check="none" migratable="on"/>
<clock offset="localtime">
<timer name="rtc" tickpolicy="catchup"/>
<timer name="pit" tickpolicy="delay"/>
<timer name="hpet" present="no"/>
<timer name="hypervclock" present="yes"/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<pm>
<suspend-to-mem enabled="no"/>
<suspend-to-disk enabled="no"/>
</pm>
<devices>
<emulator>/usr/bin/qemu-system-x86_64</emulator>
<disk type="file" device="cdrom">
<driver name="qemu" type="raw"/>
<source file="/home/user/Pulpit/Win11_25H2_Polish_x64_v2.iso"/>
<target dev="sdb" bus="sata"/>
<readonly/>
<address type="drive" controller="0" bus="0" target="0" unit="1"/>
</disk>
<disk type="file" device="disk">
<driver name="qemu" type="qcow2"/>
<source file="/media/user/misc/libvirt/w11.qcow2"/>
<target dev="sdc" bus="sata"/>
<address type="drive" controller="0" bus="0" target="0" unit="2"/>
</disk>
<controller type="usb" index="0" model="qemu-xhci" ports="15">
<address type="pci" domain="0x0000" bus="0x02" slot="0x00" function="0x0"/>
</controller>
<controller type="pci" index="0" model="pcie-root"/>
<controller type="pci" index="1" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="1" port="0x10"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x0" multifunction="on"/>
</controller>
<controller type="pci" index="2" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="2" port="0x11"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x1"/>
</controller>
<controller type="pci" index="3" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="3" port="0x12"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x2"/>
</controller>
<controller type="pci" index="4" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="4" port="0x13"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x3"/>
</controller>
<controller type="pci" index="5" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="5" port="0x14"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x4"/>
</controller>
<controller type="pci" index="6" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="6" port="0x15"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x5"/>
</controller>
<controller type="pci" index="7" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="7" port="0x16"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x6"/>
</controller>
<controller type="pci" index="8" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="8" port="0x17"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x7"/>
</controller>
<controller type="pci" index="9" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="9" port="0x18"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x03" function="0x0" multifunction="on"/>
</controller>
<controller type="pci" index="10" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="10" port="0x19"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x03" function="0x1"/>
</controller>
<controller type="pci" index="11" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="11" port="0x1a"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x03" function="0x2"/>
</controller>
<controller type="pci" index="12" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="12" port="0x1b"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x03" function="0x3"/>
</controller>
<controller type="pci" index="13" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="13" port="0x1c"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x03" function="0x4"/>
</controller>
<controller type="pci" index="14" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="14" port="0x1d"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x03" function="0x5"/>
</controller>
<controller type="sata" index="0">
<address type="pci" domain="0x0000" bus="0x00" slot="0x1f" function="0x2"/>
</controller>
<controller type="virtio-serial" index="0">
<address type="pci" domain="0x0000" bus="0x03" slot="0x00" function="0x0"/>
</controller>
<interface type="network">
<mac address="macadress"/>
<source network="default"/>
<model type="e1000e"/>
<address type="pci" domain="0x0000" bus="0x01" slot="0x00" function="0x0"/>
</interface>
<serial type="pty">
<target type="isa-serial" port="0">
<model name="isa-serial"/>
</target>
</serial>
<console type="pty">
<target type="serial" port="0"/>
</console>
<input type="mouse" bus="ps2"/>
<input type="keyboard" bus="ps2"/>
<input type="tablet" bus="usb">
<address type="usb" bus="0" port="1"/>
</input>
<tpm model="tpm-crb">
<backend type="emulator" version="2.0">
<profile name="default-v1"/>
</backend>
</tpm>
<sound model="ich9">
<address type="pci" domain="0x0000" bus="0x00" slot="0x1b" function="0x0"/>
</sound>
<audio id="1" type="none"/>
<video>
<model type="none"/>
</video>
<hostdev mode="subsystem" type="pci" managed="yes">
<source>
<address domain="0x0000" bus="0x01" slot="0x00" function="0x0"/>
</source>
<address type="pci" domain="0x0000" bus="0x05" slot="0x00" function="0x0"/>
</hostdev>
<hostdev mode="subsystem" type="pci" managed="yes">
<source>
<address domain="0x0000" bus="0x01" slot="0x00" function="0x1"/>
</source>
<address type="pci" domain="0x0000" bus="0x06" slot="0x00" function="0x0"/>
</hostdev>
<watchdog model="itco" action="reset"/>
<memballoon model="virtio">
<address type="pci" domain="0x0000" bus="0x04" slot="0x00" function="0x0"/>
</memballoon>
</devices>
</domain>
HOOK SCRIPTS
HOOK MANAGER
#!/usr/bin/env bash
#
# Author: SharkWipf
#
# Copy this file to /etc/libvirt/hooks, make sure it's called "qemu".
# After this file is installed, restart libvirt.
# From now on, you can easily add per-guest qemu hooks.
# Add your hooks in /etc/libvirt/hooks/qemu.d/vm_name/hook_name/state_name.
# For a list of available hooks, please refer to https://www.libvirt.org/hooks.html
#
GUEST_NAME="$1"
HOOK_NAME="$2"
STATE_NAME="$3"
MISC="${@:4}"
BASEDIR="$(dirname $0)"
HOOKPATH="$BASEDIR/qemu.d/$GUEST_NAME/$HOOK_NAME/$STATE_NAME"
STDIN=$(cat) # Buffer the entirety of stdin so we can pass it on to other scripts. Moderately bad idea, but if the Rust folks can do it so can I.
set -e # If a script exits with an error, we should as well.
# check if it's a non-empty executable file
if [ -f "$HOOKPATH" ] && [ -s "$HOOKPATH" ] && [ -x "$HOOKPATH" ]; then
eval \"$HOOKPATH\" "$@" <<< "$STDIN" # Call the hook with all our arguments and a copy of stdin.
elif [ -d "$HOOKPATH" ]; then
while read file; do
# check for null string
if [ ! -z "$file" ]; then
eval \"$file\" "$@" <<< "$STDIN" # Call each hook with all our arguments and a copy of stdin.
fi
done <<< "$(find -L "$HOOKPATH" -maxdepth 1 -type f -executable -print;)"
fi
START.SH
#!/bin/bash
# Helpful to read output when debugging
set -x
# Load the config file with our environmental variables
source "/etc/libvirt/hooks/kvm.conf"
# Stop your display manager. If you're on kde it'll be sddm.service. Gnome users should use 'killall gdm-x-session' instead
systemctl stop lightdm.service
# Unbind VTconsoles
echo 0 > /sys/class/vtconsole/vtcon0/bind
# Some machines might have more than 1 virtual console. Add a line for each corresponding VTConsole
# echo 0 > /sys/class/vtconsole/vtcon1/bind
# Unbind EFI-Framebuffer
echo efi-framebuffer.0 > /sys/bus/platform/drivers/efi-framebuffer/unbind
# Avoid a race condition by waiting a couple of seconds. This can be calibrated to be shorter or longer if required for your system
sleep 5
# Unload all Nvidia drivers
modprobe -r nvidia_drm
modprobe -r nvidia_modeset
modprobe -r drm_kms_helper
modprobe -r nvidia
modprobe -r i2c_nvidia_gpu
modprobe -r drm
modprobe -r nvidia_uvm
# Unbind the GPU from display driver
virsh nodedev-detach $VIRSH_GPU_VIDEO
virsh nodedev-detach $VIRSH_GPU_AUDIO
# Load VFIO kernel module
modprobe vfio
modprobe vfio_pci
modprobe vfio_iommu_type1
RELEASE.SH
#!/bin/bash
set -x
# Load the config file with our environmental variables
source "/etc/libvirt/hooks/kvm.conf"
# Unload VFIO-PCI Kernel Driver
modprobe -r vfio_pci
modprobe -r vfio_iommu_type1
modprobe -r vfio
# Re-Bind GPU to our display drivers
virsh nodedev-reattach $VIRSH_GPU_VIDEO
virsh nodedev-reattach $VIRSH_GPU_AUDIO
# Rebind VT consoles
echo 1 > /sys/class/vtconsole/vtcon0/bind
# echo 0 > /sys/class/vtconsole/vtcon1/bind
# Read our nvidia configuration when before starting our graphics
nvidia-xconfig --query-gpu-info > /dev/null 2>&1
# Re-Bind EFI-Framebuffer
echo "efi-framebuffer.0" > /sys/bus/platform/drivers/efi-framebuffer/bind
# Load nvidia drivers
modprobe nvidia_drm
modprobe nvidia_modeset
modprobe drm_kms_helper
modprobe nvidia
modprobe i2c_nvidia_gpu
modprobe drm
modprobe nvidia_uvm
# Restart Display Manager
systemctl start lightdm.service
KVM.CONF
VIRSH_GPU_VIDEO=pci_0000_01_00_0
VIRSH_GPU_AUDIO=pci_0000_01_00_1