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kvm - Spice for graphic, pulseaudio for sound - Unix ...
https://unix.stackexchange.com/questions/418708/spice-for-graphic-pulseaudio-for-sound
When we use Spice in a virtual machine under KVM/qemu/libvirt, the QEMU_AUDIO_DRV is set to spice by default. My host (debian-Stretch) use a good sound card (Xonar DX) and a better sound driver (pulseaudio,alsa). How to use in a virtual machine spice for the graphic aspect and pulseaudio or alsa for the sound aspect (whatever the guest OS) ?
Virtual WorkStation: QEMU audio
https://www.wagner.pp.ru/fossil/vws/wiki?name=QEMU%20audio
Main variable is QEMU_AUDIO_DRV, which allows to specify driver, which would be used to input/output sound from QEMU. Useful drivers are: spice - redirects audio to your spice client. Has one playback and one capture channel. Supports no options. pa - uses pulseaudio. Supports following variables QEMU_PA_SAMPLES (size of buffer), QEMU_PA_SERVER ...
Qemu audio - 简书 - jianshu.com
https://www.jianshu.com/p/d2e3c91a8b45
Qemu audio. 参考一 参考二 参考三. 最近由于项目需要，研究了一下qemu audio。Guest调用Qemu的虚拟声卡设备，声音数据（PCM）传到Qemu后，Qemu再传给事先搭建好的后端接口，这些后端接口都是通过一些环境变量设置的，如果VM使用的是spice协议，默认会添加这个环境变量：QEMU_AUDIO_DRV=spice，音频数据通过spice ...
[SOLVED] qemu-kvm virt-manager - no sound from win7 guest ...
https://bbs.archlinux.org/viewtopic.php?id=186086
The odd part is that the sound used to work, and according to the logs, QEMU_AUDIO_DRV=spice was set since day 1. It stopped after the following actions: 1. moved the whole arch installation to a new hard drive. 2. upgraded my user to …
Gentoo Forums :: View topic - [SOLVED]Virt-manager, Qemu ...
https://forums.gentoo.org/viewtopic-t-1035556-start-0.html
"QEMU_AUDIO_DRV=spice" might be your problem. Agreed, but I would want to use exactly 'spice', because 'alsa' has some threats with permissions (according to comments on the forums). Ant P. wrote:
kvm/qemu - Audio from windows guest to host without …
https://stackoverflow.com/questions/42320377/kvm-qemu-audio-from-windows-guest-to-host-without-spice
So, I changed the audio driver to ac97 (using the Windows Vista/7 drivers from Realtek), which solves the crackling a bit, but I still have frame drops, because I am using Spice. I have read online, there should be a way to get it working with ALSA and without a graphics console like Spice.
How To: Patch Qemu and Fix VM Audio - The …
https://passthroughpo.st/how-to-patch-qemu-and-fix-vm-audio/
UPDATE: as of qemu 4.0, patching is no longer needed. Please check below for qemu arguments. In late 2017, the reddit user Spheenik provided a patch for QEMU which dramatically improves its audio backend. Thanks to his work it is now possible to have well-functioning playback and recording inside guest operating systems.
sound - libvirt: Configure guest to share host audio - Ask ...
https://askubuntu.com/questions/719819/libvirt-configure-guest-to-share-host-audio
export QEMU_AUDIO_DRV=pa Doing this gave me the desired effect and the guest audio would run smoothly but the host audio would not work until I would have closed the guest. Looking at the host processes I noticed that libvirt spawned another Pulseaudio instance under my current user (effectively having 2 Pulseaudio instances) instead of using ...
[SOLVED] - QEMU fail to boot Virtual Machine failed ...
https://forum.proxmox.com/threads/qemu-fail-to-boot-virtual-machine-failed-could-not-read-from-cd-rom.104023/
Using libvirt, I am creating VM on Proxmox with Scaleway. I have an ansible file that create a VM name CentOS_Base, the most important commands are: #...
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