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

[Marcin Falkiewicz]

Seems like you have to keep it. RX 4xx doesn't support legacy BIOS, only 
UEFI firmware.

On 22.01.2017 00:37, Luke Yelavich 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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