Intel integrated GPU passthrough - HDMI output

[ffm777]

Hi all,
I'm new to Proxmox but successfully passed my integrated Intel GPU through to a Windows 10 VM following this guide:
https://forum.proxmox.com/threads/guide-intel-intergrated-graphic-passthrough.30451/

The GPU shows up in the Windows device manager and after installing the Intel drivers it works fine. The only problem I have is that I cannot get anything to show on a monitor attached to the HDMI port. The screen just stays black. I would be grateful for any ideas what the problem could be! Thanks!

 

[adamb]

Hi all,
I'm new to Proxmox but successfully passed my integrated Intel GPU through to a Windows 10 VM following this guide:
https://forum.proxmox.com/threads/guide-intel-intergrated-graphic-passthrough.30451/

The GPU shows up in the Windows device manager and after installing the Intel drivers it works fine. The only problem I have is that I cannot get anything to show on a monitor attached to the HDMI port. The screen just stays black. I would be grateful for any ideas what the problem could be! Thanks!

This is a tricky one, I might be able to provide some tips to get it working.

- Using OVMF is not a option if you want to display on a physical monitor
- Once its passed through, linux can't use it!
- All of my VM's are using seabios
- Before I get a display on a physical screen, the OS needs a driver

I usually do this by installing the OS with no IGD passthrough. This way I have access to the vnc console. I then use the "monitor" tab to hot add the video card. At that point it shows up in device manager, I install the driver, shut the VM down, add my args: command back to the config and boot the VM. At that point you should have a physical display.

Here is a VM config I use.

args: -device vfio-pci,host=00:02.0,addr=0x18,x-vga=on,x-igd-opregion=on
bootdisk: virtio0
cores: 4
cpu: host
hostpci0: 00:14.0
hostpci1: 00:1f.3
memory: 6000
name: Kiosk
net0: e1000=9A:6A:8D:97:78:F1,bridge=vmbr1
numa: 0
onboot: 1
ostype: win10
scsihw: virtio-scsi-pci
sockets: 1
vga: std
virtio0: local-lvm:vm-100-disk-1,size=100G

Ive also injected the video drivers into the windows ISO installer but thats a little different topic.

 

[ffm777]

Hi,
first of all thank you very much for your tips! My Win 10 VM is running with OVMF BIOS. The problem now is that switching to SeaBIOS is not possible as far as I understand. At least, I can't get the VM to boot after switching back to SeaBIOS. I might have to try to install Win10 in a new VM with SeaBIOS and see whether that works.

 

[seafoodlover]

This is a tricky one, I might be able to provide some tips to get it working.

- Using OVMF is not a option if you want to display on a physical monitor
- Once its passed through, linux can't use it!
- All of my VM's are using seabios
- Before I get a display on a physical screen, the OS needs a driver

I usually do this by installing the OS with no IGD passthrough. This way I have access to the vnc console. I then use the "monitor" tab to hot add the video card. At that point it shows up in device manager, I install the driver, shut the VM down, add my args: command back to the config and boot the VM. At that point you should have a physical display.

Here is a VM config I use.

args: -device vfio-pci,host=00:02.0,addr=0x18,x-vga=on,x-igd-opregion=on
bootdisk: virtio0
cores: 4
cpu: host
hostpci0: 00:14.0
hostpci1: 00:1f.3
memory: 6000
name: Kiosk
net0: e1000=9A:6A:8D:97:78:F1,bridge=vmbr1
numa: 0
onboot: 1
ostype: win10
scsihw: virtio-scsi-pci
sockets: 1
vga: std
virtio0: local-lvm:vm-100-disk-1,size=100G

Ive also injected the video drivers into the windows ISO installer but thats a little different topic.

Hi, I also try to display with physical monitor with HDMI, You said "use the "monitor" tab to hot add the video card", may I know where is monitor tab, in windows or Proxmox?