On 05.11.2017 00:53, Patrick O'Callaghan wrote:
On Sat, 2017-11-04 at 12:09 +0000, Ferdinand Pöll wrote:
> Is there some special magic to make this work, or is this a known bug
> in QEMU/KVM and I should just forget about it?
This sounds like a common problem which occurs when you are using a
GPU in a VM without Message-Signal-based-Interrupts. Please try this:
*
https://wiki.lime-technology.com/UnRAID_Manual_6#Enable_MSI_for_Interrupts_to_Fix_HDMI_Audio_Support
*
https://forums.guru3d.com/threads/windows-line-based-vs-message-signaled-based-interrupts.378044/
Thanks, I took a look and although the PCIe board and GPU are both
listed as MSI-capable by lspci on the host, they don't offer that in
the Windows registry.
The registry keys are often not present and have to be created manually.
See Alex's blog entry here:
http://vfio.blogspot.de/2014/09/vfio-interrupts-and-how-to-coax-windows.html
Hristo
poc
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