[Bug 1880066] Re: Microphone input dies in guest when switching evdev input

[Justin Cichra]

I upgraded to Ubuntu 20.10 (Groovy Gorilla) and the issue was resolved.

Here's a list of relevant package versions:

root@justin-3900x:/home/justin# apt list --installed | grep virt
(etc...)

WARNING: apt does not have a stable CLI interface. Use with caution in
scripts.

gir1.2-libvirt-glib-1.0/groovy,now 3.0.0-1 amd64 [installed,automatic]
libgovirt-common/groovy,groovy,now 0.3.7-1 all [installed,automatic]
libgovirt2/groovy,now 0.3.7-1 amd64 [installed,automatic]
libqt5virtualkeyboard5/groovy,now 5.14.2+dfsg-2 amd64 [installed,automatic]
libsys-virt-perl/groovy,now 6.3.0-1 amd64 [installed,automatic]
libvirt-clients/groovy-updates,now 6.6.0-1ubuntu3.1 amd64 [installed,automatic]
libvirt-daemon-driver-qemu/groovy-updates,now 6.6.0-1ubuntu3.1 amd64 
[installed,automatic]
libvirt-daemon-driver-storage-zfs/groovy-updates,now 6.6.0-1ubuntu3.1 amd64 
[installed]
libvirt-daemon-system-systemd/groovy-updates,now 6.6.0-1ubuntu3.1 amd64 
[installed,automatic]
libvirt-daemon-system/groovy-updates,now 6.6.0-1ubuntu3.1 amd64 
[installed,automatic]
libvirt-daemon/groovy-updates,now 6.6.0-1ubuntu3.1 amd64 [installed,automatic]
libvirt-glib-1.0-0/groovy,now 3.0.0-1 amd64 [installed,automatic]
libvirt0/groovy-updates,now 6.6.0-1ubuntu3.1 amd64 [installed,automatic]
python3-libvirt/groovy,now 6.1.0-1 amd64 [installed,automatic]
qml-module-qtquick-virtualkeyboard/groovy,now 5.14.2+dfsg-2 amd64 
[installed,automatic]
qtvirtualkeyboard-plugin/groovy,now 5.14.2+dfsg-2 amd64 [installed,automatic]
ruby-fog-libvirt/groovy,groovy,now 0.6.0-1 all [installed,automatic]
ruby-libvirt/groovy,now 0.7.1-1build1 amd64 [installed,automatic]
vagrant-libvirt/groovy,groovy,now 0.1.2-1 all [installed,automatic]
virt-manager/groovy,groovy,now 1:2.2.1-4ubuntu2 all [installed]
virt-p2v/groovy,now 1.42.0-2 amd64 [installed,automatic]
virt-viewer/groovy,now 7.0-2build1 amd64 [installed,automatic]
virtinst/groovy,groovy,now 1:2.2.1-4ubuntu2 all [installed,automatic]
qemu-kvm/groovy,now 1:5.0-5ubuntu9 amd64 [installed]
ipxe-qemu-256k-compat-efi-roms/groovy,groovy,now 
1.0.0+git-20150424.a25a16d-0ubuntu4 all [installed,automatic]
ipxe-qemu/groovy,groovy,now 1.0.0+git-20190125.36a4c85-5ubuntu3 all 
[installed,automatic]
libvirt-daemon-driver-qemu/groovy-updates,now 6.6.0-1ubuntu3.1 amd64 
[installed,automatic]
qemu-block-extra/groovy,now 1:5.0-5ubuntu9 amd64 [installed,automatic]
qemu-efi-aarch64/groovy,groovy,now 2020.05-5 all [installed,automatic]
qemu-efi-arm/groovy,groovy,now 2020.05-5 all [installed,automatic]
qemu-kvm/groovy,now 1:5.0-5ubuntu9 amd64 [installed]
qemu-system-arm/groovy,now 1:5.0-5ubuntu9 amd64 [installed]
qemu-system-common/groovy,now 1:5.0-5ubuntu9 amd64 [installed,automatic]
qemu-system-data/groovy,groovy,now 1:5.0-5ubuntu9 all [installed,automatic]
qemu-system-gui/groovy,now 1:5.0-5ubuntu9 amd64 [installed,automatic]
qemu-system-x86/groovy,now 1:5.0-5ubuntu9 amd64 [installed]
qemu-user-static/groovy,now 1:5.0-5ubuntu9 amd64 [installed]
qemu-utils/groovy,now 1:5.0-5ubuntu9 amd64 [installed,automatic]
qemu/groovy,now 1:5.0-5ubuntu9 amd64 [installed]

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1880066

Title:
  Microphone input dies in guest when switching evdev input

Status in QEMU:
  New
Status in qemu package in Fedora:
  New

Bug description:
  justin@justin-3900x:~$ lsb_release -a
  No LSB modules are available.
  Distributor ID:       Ubuntu
  Description:  Ubuntu 20.04 LTS
  Release:      20.04
  Codename:     focal


  justin@justin-3900x:~$ apt list --installed | egrep '*qemu*|*kvm*'

  WARNING: apt does not have a stable CLI interface. Use with caution in
  scripts.

  ipxe-qemu-256k-compat-efi-roms/focal,focal,now 
1.0.0+git-20150424.a25a16d-0ubuntu4 all [installed,automatic]
  ipxe-qemu/focal,focal,now 1.0.0+git-20190109.133f4c4-0ubuntu3 all 
[installed,automatic]
  libvirt-daemon-driver-qemu/focal,now 6.0.0-0ubuntu8 amd64 
[installed,automatic]
  qemu-block-extra/focal-updates,focal-security,now 1:4.2-3ubuntu6.1 amd64 
[installed,automatic]
  qemu-kvm/focal-updates,focal-security,now 1:4.2-3ubuntu6.1 amd64 [installed]
  qemu-system-common/focal-updates,focal-security,now 1:4.2-3ubuntu6.1 amd64 
[installed,automatic]
  
qemu-system-data/focal-updates,focal-updates,focal-security,focal-security,now 
1:4.2-3ubuntu6.1 all [installed,automatic]
  qemu-system-gui/focal-updates,focal-security,now 1:4.2-3ubuntu6.1 amd64 
[installed,automatic]
  qemu-system-x86/focal-updates,focal-security,now 1:4.2-3ubuntu6.1 amd64 
[installed]
  qemu-utils/focal-updates,focal-security,now 1:4.2-3ubuntu6.1 amd64 
[installed,automatic]
  qemu/focal-updates,focal-security,now 1:4.2-3ubuntu6.1 amd64 [installed]
  justin@justin-3900x:~$ 

  This did not happen in Eoan (qemu 4.0.0). I was able to switch in/out
  of a VM with my audio coming through fine. I enabled Eoan in my
  sources.list, downgraded all my qemu packages, and the issue was
  resolved.

  This happens on the latest Windows 10 guest when a sound device is
  listening for the microphone.

  /var/log/libvirt/qemu/<vmname>.log spews this error out when I switch
  with evdev (which is just the keyboard and mouse, the audio is passed
  through I assume spice):

  
  audio: live=228193 hw->conv_buf->size=1920
  A bug was just triggered in audio_get_avail
  Context:
  audio: live=228675 sw->hw->conv_buf->size=1920
  A bug was just triggered in audio_pcm_hw_get_live_in
  Context:
  audio: live=228675 hw->conv_buf->size=1920
  A bug was just triggered in audio_get_avail
  Context:
  audio: live=229156 sw->hw->conv_buf->size=1920
  A bug was just triggered in audio_pcm_hw_get_live_in
  Context:
  audio: live=229156 hw->conv_buf->size=1920
  A bug was just triggered in audio_get_avail
  Context:
  audio: live=229638 sw->hw->conv_buf->size=1920
  A bug was just triggered in audio_pcm_hw_get_live_in
  Context:
  audio: live=229638 hw->conv_buf->size=1920
  A bug was just triggered in audio_get_avail
  Context:
  audio: live=230119 sw->hw->conv_buf->size=1920
  A bug was just triggered in audio_pcm_hw_get_live_in
  Context:
  audio: live=230119 hw->conv_buf->size=1920
  A bug was just triggered in audio_get_avail
  Context:
  audio: live=230600 sw->hw->conv_buf->size=1920
  A bug was just triggered in audio_pcm_hw_get_live_in
  Context:
  audio: live=230600 hw->conv_buf->size=1920
  A bug was just triggered in audio_get_avail
  Context:
  audio: live=231081 sw->hw->conv_buf->size=1920

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1880066/+subscriptions