Is kvmgt display support compatible with q35?

[Zhenyu Wang]

On 2018.10.12 16:22:56 -0600, Alex Williamson wrote:
> Hi,
> 
> I've installed Windows 10 (1803 September 2018 update) into two
> separate GVT-g VMs, one a 440FX/SeaBIOS configuration and the other a
> Q35/OVMF configuration.  I've made the two VMs as similar as I possibly
> can other than the machine and firmware settings.  XML for each is
> attached.  I'm also testing Gerd's ramfb support, which explains the
> driver override and additional hostdev ramfb option for each.
> 
> The 440FX/SeaBIOS VM works well, I installed the 15.40.41.5058 driver
> (host is an i7-5600U with Intel HD Graphics 5500).  I'm able to get to
> the Intel Graphics Properties and Graphics Options menus, and
> everything behaves as I'd expect.
> 
> With the Q35/OVMF VM, the VM display goes blank as soon as Windows
> updates the graphics driver after install, I need to swap to an
> emulated graphics device and install TightVNC server in the VM for
> access.  Installing the same driver as above does not resolve the
> display issue.  On boot, the display via virt-manager/virt-viewer
> is frozen with TianoCore boot graphic and halted Windows dots
> animation.  Running a Unigine test in the VM suggests the vGPU is
> working properly (connected via in-guest VNC server), but I don't get
> the Graphics Properties and Graphics Options menus, and of course the
> display option seemingly stops working.  Do I have a configuration
> issue preventing display from working properly or is there something
> about a Q35/OVMF configuration that prevents the display from working?
> Thanks,
> 

AFAIK, windows display still has problem with OVMF that our previous
proposal to fix this was not taken. Cc Henry & Tina to double check.

-- 
Open Source Technology Center, Intel ltd.

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