[vfio-users] Cannot have sound from the guest

[Will Marler]

I'm of no help wrt getting PulseAudio working. However, how important is
this to you? A much better solution for me (I use the VM exclusively for
gaming) was to get a $10 PCI USB card, and some USB headphones. I pass the
PCI USB card through to the guest, and everything works better this way.
Surround sound, no crackling, etc. Perhaps this would be a better solution
for you too.

On Fri, Jan 8, 2016 at 10:01 AM, sL1pKn07 SpinFlo <sl1pkn07 at gmail.com>
wrote:

> 2016-01-08 17:50 GMT+01:00 Feadurn <feadurn at gmail.com>:
> > I did the export in the bash, check it was activate with set, then launch
> > virt-manager and launch the vm from there but still the same issue (exact
> > same error)
> >
> > Regards,
> >
> > Feadurn
> >
> >
> > On 08/01/16 16:07, sL1pKn07 SpinFlo wrote:
> >>
> >> 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
> >>>
> >>>
> >>> _______________________________________________
> >>> vfio-users mailing list
> >>> vfio-users at redhat.com
> >>> https://www.redhat.com/mailman/listinfo/vfio-users
> >>>
> >> 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
> >
> >
>
>
> mmm then try this: (i assume you launch qemu from user root)
>
> copy the system default.pa (/etc/pulse/default.pa) to ~/.pulse/default.pa
> add this:
>
> ### KVM
> load-module module-native-protocol-tcp auth-ip-acl=127.0.0.1
>
> to the end of ~/.pulse/default.pa
>
> then create the file client.con in /root/.pulse/client.conf with this
> content:
>
> default-server = 127.0.0.1
>
> and try again launch the VM
>
> source:
> http://www.se7ensins.com/forums/threads/how-to-setup-a-gaming-virtual-machine-with-gpu-passthrough-qemu-kvm-libvirt-and-vfio.1371980/
>
> greetings
>
> _______________________________________________
> vfio-users mailing list
> vfio-users at redhat.com
> https://www.redhat.com/mailman/listinfo/vfio-users
>
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