[vfio-users] No HDMI audio from AMD RX480 when passed through to Windows 8.1 VM.

[Nick Sarnie]

Did you set x-vga=on for the BIOS VM?

On Sat, Jan 21, 2017 at 6:37 PM, Luke Yelavich <themuso at themuso.com> wrote:

> On Wed, Jan 18, 2017 at 08:21:05PM AEDT, Luke Yelavich wrote:
> > Greetings.
> > I'm writing with a rather annoying problem. I am unable to get audio
> output
> > through HDMI on an AMD RX480 card that is being passed through to a
> Windows
> > 8.1 VM.
>
> So, I decided to create the VM again but using legacy BIOS instead of
> UEFI. Low and behold, the HDMI audio works fine, although I have to leave a
> spice/QXL video card attached to the VM otherwise it won't boot, unlike
> with UEFI where I need only have the AMD card passed through and the VM
> will boot.
>
> Is there any work-around for the above, or will I need to keep a spice
> video around as a secondary monitor, even though I don't use it?
>
> Thanks.
>
> Luke
>
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