Arch Linux

Shinigami92

Member

From: Germany

Registered: 2020-09-11

Posts: 16

Website

[SOLVED] No sound pass through from Win10 qemu VM to host after update

On 19.05.2021 I updated my system from 5.10.36-1-lts to 5.10.38-1-lts with some other packages
Just a normal pacman -Syu

After this update my qemu windows10 vm doesn't send sound anymore to my host system

So before I had Discord and YouTube running on my arch and Overwatch / Apex running in my VM and had all the sound working in my arch

The Windows 10 VM sound is working! When I use the monitor (via HDMI) as sound, then the sound is working normally
Everything in my arch is also working fine.
But when I select "High Definition Audio Device" in my Win10 previously I had sound in my arch from the VM, but after the system update on 19.05.2021 it's not working anymore

I already tried here and there some solutions but had no luck yet

One solution suggested me to execute "systemctl --user status pulseaudio" and that is telling me someing like this:

May 22 10:44:03 shinigami pulseaudio[23132]: ALSA woke us up to write new data to the device, but there was actually nothing to write.
May 22 10:44:03 shinigami pulseaudio[23132]: Most likely this is a bug in the ALSA driver 'snd_usb_audio'. Please report this issue to the ALSA developers.
May 22 10:44:03 shinigami pulseaudio[23132]: We were woken up with POLLOUT set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail.

I'm also reading something about checking "/run/user/1000/pulse/native" with "pavucontrol" in playback, but there is nothing about "/run/user/1000/pulse/native"! So I assume there is something broken with "pulseaudio" after the update?!

Please let me know every file and info you need to know to help me and I will attach it in further posts

My current workaround is to pass my headset usb-slot to the VM
But this have two downsides:
1. I have crackling sound
2. I have only the sound of my VM, forcing me to also run Discord and YouTube in my VM

So this is only a temp solution but very annoying

Last edited by Shinigami92 (2021-05-23 18:04:35)

Shinigami92

Member

From: Germany

Registered: 2020-09-11

Posts: 16

Website

Re: [SOLVED] No sound pass through from Win10 qemu VM to host after update

Additional Info #1: On non-lts kernal "5.12.5.arch1-1" it also doesn't work and the same problem occurs
So I assume it is not directly a bug with the kernal, but an issue with some other dependencies I updated alongside on 19.05.2021

I looked on the ALSA website and the latest release they list was on "2020-10-20". So it could be that the current version has an issue with the latest kernals (plural!, lts and non-lts) but I don't think that this is the issue

Shinigami92

Member

From: Germany

Registered: 2020-09-11

Posts: 16

Website

Re: [SOLVED] No sound pass through from Win10 qemu VM to host after update

Solved: Seems it was an update with libvirt and I needed to update my sound configuration
From ICH9 to USB and some other rearrangements

https://wiki.archlinux.org/title/PCI_pa … PulseAudio

Last edited by Shinigami92 (2021-05-23 18:06:09)

cinatic

Member

Registered: 2013-01-27

Posts: 13

Re: [SOLVED] No sound pass through from Win10 qemu VM to host after update

Stumbled upon that issue too. It looks like the audiodev settings has been moved out from qemu:args somehow, so it only works for me with the new syntax:

    <sound model='ich9'>
      <codec type='micro'/>
      <audio id='1'/>
    </sound>
    <audio id='1' type='pulseaudio' serverName='/run/user/1000/pulse/native'/>

kvvoya

Member

Registered: 2024-10-16

Posts: 1

Re: [SOLVED] No sound pass through from Win10 qemu VM to host after update

Something that worked for me was installing SPICE tools in the windows VM and setting the type of audio from 'pulseaudio' to 'spice'

<audio id='1' type='spice' />

Lone_Wolf

Administrator

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 13,074

Re: [SOLVED] No sound pass through from Win10 qemu VM to host after update

Thank you for the input, but this a solved old thread.

https://wiki.archlinux.org/title/Genera … bumping%22

Closing topic.

---

Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.

clean chroot building not flexible enough ?
Try clean chroot manager by graysky