Linux guest (with GPU passthru) issue with pulseaudio

[DomF]

Hi,

This is my first post here. I'm running proxmox 5.1-42. I recently managed to get GPU passthru up and running in both an Ubuntu desktop guest and Windows 10 guest (Nvidia GTX1050Ti GPU and drivers installed). After rejoicing in my achievement I decided to kick back view some Youtube using firefox on my Ubuntu 16.04 desktop guest. Well, the video playback was terrible with choppy video and distorted audio playback. After experimenting, I noticed, if I killed the pulseaudio process the video playback would kick into life (after reloading the webpage) and play nicely although without audio present.

Has anyone else experienced this with their setup with video and audio playback with pulseaudio. What is needed to get clean Audio and Video playback?

Thanks.

 

[DomF]

To fix this pulseaudio issue with Linux guests need to add:
/etc/modprobe.d/snd-hda-intel.conf
with:
options snd-hda-intel enable_msi=1