[Bug 575919] Re: no sound: pulseaudio connection refused

[Sam Azer]

Hi Serge,

To be more precise:

* rdesktop from the current workstation to a Windows VM on the current
workstation connects correctly (rdesktop connects correctly) to
PulseAudio on the current workstation. This allows the rdesktop user to
hear the sound being produced by the Windows VM through PulseAudio via
rdesktop. From this we know that PulseAudio on the current workstation
is working correctly and that the sound system in the VM is producing
sound.

The problem is this:

* KVM/QEMU contain a virtual sound card. This virtual hardware is
supposed to be able to receive the sound from the VM and send it to the
PulseAudio system. I have tried very hard to get that hardware to
actually connect to PulseAudio via some combination of command line
options - without success.

The virtual sound card is in KVM/QEMU, there is some documentation on
the many command line parameters that control it, there are many options
intended to make it possible to use the feature on workstations with
different sound system setups, the VM OS recognizes the different
virtual devices that can be emulated - in short: everything looks good
but doesn't work with PulseAudio.

I was playing with this quite some time ago and my memory is fuzzy on
details but I recall that the VM was able to connect directly to a sound
system (ie: locking the hardware so that no other software can connect.)
The problem was getting it to connect to PulseAudio so that, for
example, I can hear the sound produced by the VM while listening to
Amarok on the main workstation or while talking on my softphone.

My thanks as always for the excellent work you guys are doing!

All the best,
Take care,
Sam.

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https://bugs.launchpad.net/bugs/575919

Title:
  no sound: pulseaudio connection refused