virtualbox.org

Hello,

I have a Windows 7 VM for which sound works fine. However, when I start this VM headless, sound seems to be disabled. Is there a way to enable sound?

Tech info: Host is Windows 2008 R2, VirtualBox 4.3.12. Guest is Windows 7 x64 Professional. Both host and guest have all updates installed.

Any ideas?

TIA,

Bart Zorn

Further experimenting has shown that it depends on how I start the headless machine.

When I start the machine from the GUI, with the Shift key pressed, Audio works. When I start the machine with a script using vboxmanage, it also works.
But when I start that same script using the Task Scheduler, the machine starts up, but Audio does not work.

So I have to assume that this is not a VirtualBox problem, but a Windows Task Scheduler problem. However, somebody hopefully has some suggestions?

TIA,

Bart

Do you run your schedule task under a regular user and have you enabled the "interact with desktop"?

Sorry I did not reply earlier.

I run the task as an ordinary user, which is a member of the Administrators group.

I could not find where to specify if the task is allowed to interact with the desktop.

Regards,

Bart

I'm confusing with Services for the desktop interaction. If you can't allow that, I am not sure you can do what you want. Maybe others will have clues about this.

Thanks for your reply.

Although I don't understand why, I have a feeling that there is a link between the desktop and the availability of sound, at least in Windows 2008 R2.

I will explore further and I hope someone else is also interested!

Bart

There is definitely a link. that's why I mention the "interact with desktop" part.