[vfio-users] High GPU PCI-e bus usage resulting in USB audio cutting out

[Taiidan at gmx.com]

On 02/16/2018 11:29 AM, John Koelndorfer wrote:

> There was a patchset released for qemu that greatly improves the emulated
> audio device sound quality. It helps with the frequent popping you'd hear
> with vanilla qemu. See this thread on reddit:
> https://www.reddit.com/r/VFIO/comments/74vokw/improved_pulse_audio_driver_for_qemu/
>
> It's not upstreamed so you will need to apply it yourself. Alternatively if
> you are using Arch Linux, there's a package on the AUR with the patches
> already applied:https://aur.archlinux.org/packages/qemu-patched/. I have
> been using it for some time without issue.
>
> In my configuration I use an emulated Intel HDA device with output to
> pulseaudio.
I am using a cmedia USB audio device not emulated sound (this is a 
server without any video/audio packages on the host), but thanks for the 
info.

On 02/16/2018 07:46 AM, Jayme Howard wrote:

> I had this problem, and ended up doing audio over HDMI to the monitor,
> which has a jack for a speaker.  Zero audio stuttering since then.  That
> was with a 970.  I've since upgraded to a 1080, and haven't retested the
> USB thing, but also don't see a need to because this works perfectly.
My screen has no audio out :[

Yeah the video card audio is the best, and it saves a pci-e port (or usb 
port if you use crappy usb audio like me)