User-Agent:       Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML,
like Gecko) Chrome/80.0.3987.149 Safari/537.36
Build Identifier: 

Using the latest tumbleweed 2020/03/22 and virtualbox 6.1.4 (tumbleweed host)
Pulse Audio version 11

All guest VMs with PulseAudio and Intel HD Audio do not produce sound.
Different audio settings do not produce sound.

With Leap 15.1 as host and virtualbox 6.0.12 the same VMs do work properly with
Pulse Audio Version 11

Reproducible: Always

Steps to Reproduce:
1. Run VM (Windows 10 or Leap) guest under virtualbox
2. Using chrome browser play sound from youtube
3.



The example of a good and bad vb log shows the following difference
VBox.log.1 shows working, VBox.log.2 show failure.

VBox.log.1:00:00:05.666638   Driver <string>  = "PulseAudio" (cb=11)
VBox.log.1:00:00:05.666646   DriverName      <string>  = "PulseAudio" (cb=11)
VBox.log.1:00:00:05.834124 Audio: Initializing PulseAudio driver
VBox.log.1:00:00:05.837151 PulseAudio: Using v11.1.0
VBox.log.1:00:00:05.838495 PulseAudio: Retrieving server information ...

VBox.log.2:00:00:08.499673   Driver <string>  = "PulseAudio" (cb=11)
VBox.log.2:00:00:08.499678   DriverName      <string>  = "PulseAudio" (cb=11)
VBox.log.2:00:00:08.619947 Audio: Initializing PulseAudio driver
VBox.log.2:00:00:08.622795 PulseAudio: Using v13.0.0
VBox.log.2:00:00:08.623157 PulseAudio: Failed to connect to server: Connection
refused
VBox.log.2:00:00:08.623263 PulseAudio: Retrieving server information ...
VBox.log.2:00:00:08.623275 PulseAudio: Server information not available,
skipping enumeration
VBox.log.2:00:02:11.479897 PulseAudio: Retrieving server information ...
VBox.log.2:00:02:11.479918 PulseAudio: Server information not available,
skipping enumeration