[vfio-users] Cannot have sound from the guest

[sL1pKn07 SpinFlo]

2016-01-08 16:45 GMT+01:00 Feadurn <feadurn at gmail.com>:
> I have everything working except the sound from the guest. I am using
> pulseaudio and it works out of the box for everything else except having the
> sound from the vm.
>
> I reinstalled pulseaudio and pulseaudio-alsa to be sure I have a clean
> install
>
> I follow the guide here https://wiki.archlinux.org/index.php/PulseAudio#QEMU
>
> When I run the command
>
> qemu-system-x86_64 -audio-help | awk '/Name: pa/' RS=
>
> I get
>
> Name: pa
> Description: http://www.pulseaudio.org/
> Theoretically supports many playback voices
> Theoretically supports many capture voices
> Options:
>   QEMU_PA_SAMPLES: integer, default = 4096
>     buffer size in samples
>   QEMU_PA_SERVER: string, default = (not set)
>     server address
>   QEMU_PA_SINK: string, default = (not set)
>     sink device name
>   QEMU_PA_SOURCE: string, default = (not set)
>     source device name
>
> Then I add in my xml the following options
>
>   <qemu:commandline>
>     <qemu:env name='QEMU_AUDIO_DRV' value='pa'/>
>     <qemu:env name='QEMU_PA_SINK'
> value='alsa_output.pci-0000_00_1b.0.analog-stereo'/>
>     <qemu:env name='QEMU_PA_SOURCE' value='input'/>
>   </qemu:commandline>
>
>
> The value of QEMU_PA_SINK is obtained with the command
>     pacmd list-sinks | grep -e 'name:' -e 'index'
>
>
> In qemu.conf I uncomment the following options
>
> vnc_allow_host_audio = 1
> nographics_allow_host_audio = 1
>
> The only weird thing about my configuration is that I started to use libvirt
> as root user. I then switch to be able to use it as user. However myy vm is
> still on the root system but I can launch it as user without password (I
> didn't find the way to move the vm to the qemu user-session)
>
> When I launch the VM I don't have sound (even in the vm everything works
> with the AC97 installed on win10 64) and I get the following output:
>
> pulseaudio: pa_context_connect() failed
> pulseaudio: Reason: Connection refused
> pulseaudio: Failed to initialize PA contextaudio: Could not init `pa' audio
> driver
> pulseaudio: pa_context_connect() failed
> pulseaudio: Reason: Connection refused
> pulseaudio: Failed to initialize PA contextaudio: Could not init `pa' audio
> driver
> alsa: Could not initialize ADC
> alsa: Failed to open `default':
> alsa: Reason: Device or resource busy
> alsa: Could not initialize ADC
> alsa: Failed to open `default':
> alsa: Reason: Device or resource busy
> audio: Failed to create voice `ac97.pi'
>
>
> And I am lost there :(
>
> Thank you in advance for any help :)
>
> Feadurn
>
>
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>

you tried with use QEMU_AUDIO_DRV as environment option?

export QEMU_AUDIO_DRV=pa

and then launch the VM? i think these options is for environment, not
for qemu comandline option

greetings