[Qemu-devel] Pulse audio error on Ubuntu Mate

[G 3]

When I try to run QEMU on Ubuntu Mate, I see these error messages:

pulseaudio: set_sink_input_volume() failed
pulseaudio: Reason: Invalid argument
pulseaudio: set_sink_input_mute() failed
pulseaudio: Reason: Invalid argument

Trying to play an audio file in the guest fails. The guest freezes for a
few seconds. I was using the usb audio card on qemu-system-ppc. It was
running in kvm mode on PowerPC hardware.