I'm trying to pass a PCIe soundcard though to a Windows 10 VM.

 

I tried doing it using the GUI system for setting up template settings for VM but have only had partial success -- the card works but you can hear it struggling at time and some audio it just won't play although it will play the bass from that audio.

 

Is there a better option for passing the card?

 

I searched and I have found some discussion on this but it is unclear if the manual editing of the XML file was something people had to do before the GUI system was implemented or if it is something that people still have to do now.

Did you use the ACS Override function for your passthrough?

Which Plattform you are using (Skylake)?

the problem is that the ACS override doesn't work that good on skylake.

 

Maybe you should try to use another PCIe Slot

I have dual E5-2670s -- not sure what the platform for those are.

 

I did not try ACS Override -- only one VM has anything that is being pass through to it. Also the sound card is the only item in that group. From what I read on ACS Override  I shouldn't need it and if you don't need it then it would be better to not turn it on.

 

Have not tried using another PCIe slot. That is a pretty simple thing to try so I'll take a shot at it.

 

The GPU I am passing-through has HDMI audio. I've read that could cause issues and that I should pass the HDMI audio through as well but as I try to do that I haven't had much luck -- I typically get the BIOS on the VM but no boot.

 

I have also been told that I might be able to fix this by isolating the CPUs but haven't had time to read up on that. Performance on the VM is good so I don't need the CPU isolating except in so much as it might fix the sound issue.