[vfio-users] IGD passthrough black screen

[Alex Williamson]

On Mon, 30 Jan 2017 20:53:50 +0100
José A. Gómez <mailgomez at gmail.com> wrote:

> Hello,
> 
> This is my config
> 
> Asus z87 deluxe (socket 1150)
> CPU  Intel 4590 (hd4600)
> ati 5770
> memory 16 GB
> Antergos OS
> Kernel version 4.9.6-1-ARCH
> 
> I have been working with the ATI as a guest in the VM without big problems
> (although it doesn't have a real uefi rom) and now I wanted to experiment
> with the IGD.
> I'm trying to pass the intel graphics to the VM (W10) but I only get a
> black screen. It is recognized in Windows 10 perfectly (adding the qxl
> graphics previously) but the screen does not turn on using the hdmi output.
> 
> What I have done first is install windows 10 with qxl graphics card and
> after the installation add the IGD to the VM. Once inside the VM again
> install the drivers of the intel grapihcs card ( whichs is recognized
> perfectly as a intel hd4600),
> shutdown the VM and remove the qxl card.
> 
> I also tried this in ubuntu with the same results.

Are there any errors reported in /var/log/libvirt/qemu/win10.log?