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[Bug 1880066] Re: Microphone input dies in guest when switching evdev in
From: |
Chris |
Subject: |
[Bug 1880066] Re: Microphone input dies in guest when switching evdev input |
Date: |
Wed, 30 Sep 2020 11:20:36 -0000 |
I have this exact issue with any VM using Spice audio redirection.
My setup has Linux (Fedora 32) as host and guest.
The Guest microphone freezes mid way through most video conferences, which is
quite a pain.
I see the exact same error messages:
A bug was just triggered in audio_get_avail
Context:
audio: live=172895567 sw->hw->conv_buf->size=1920
A bug was just triggered in audio_pcm_hw_get_live_in
Context:
audio: live=172895567 hw->conv_buf->size=1920
Closing the spice client (Boxes or Virtmanager) and reconnecting sometimes
restores microphone.
I have tried AC97 and HD Audio as virtual hardware and have the same results,
AC97 may be proving to be a little less failure prone, but I have not had
enough events to be sure.
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https://bugs.launchpad.net/bugs/1880066
Title:
Microphone input dies in guest when switching evdev input
Status in QEMU:
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
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