VirtualBox ignores DACDev setting

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Problem :

I use 2 sound cards. My main sound card runs JACK and bridged PulseAudio (hw:2). The other one is free (hw:0).

Because the ALSA audio driver in VirtualBox has the lowest latency, I am using it. However sound does not work. Doing:

$ sudo vboxmanage setextradata "windows" "VBoxInternal/Devices/hda/0/LUN#0/Config/Audio/Alsa/DACDev" "pulse"


$ sudo vboxmanage setextradata "windows" "VBoxInternal/Devices/hda/0/LUN#0/Config/Audio/Alsa/DACDev" "hw:0,0"

does not work either.

How can I get sound to play over any of my sound cards?

  • OS: Kubuntu 15.04
  • vboxmanage –version: 5.0.4r102546
  • uname -a: Linux linux 3.19.0-28-lowlatency #30-Ubuntu SMP PREEMPT Mon Aug 31 16:36:36 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Solution :

Fixed. This is what I did:

  1. Added myself to vboxusers group
  2. Added the following to ~/.asoundrc:

    pcm.!default {
       type pulse
  3. Moved all VMs from root to my user and changed owner/group

  4. Moved /root/.config/VirtualBox/* to ~/.config/VirtualBox/, changed owner/group and changed VM paths
  5. Not using sudo anymore for vboxmanage

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