Audio doesn't consistently work in VirtualBox

[Aassem]

VirtualBox audio is inconsistent in sending audio to speakers. I am using a Windows 7 64-bit host, and all my Virtual Machines are affected (Ubuntu, Linux Mint, and Windows XP). The definition of inconsistent here refers to the fact that audio will play on certain sessions of using the Guest OS (for the entire session), but not every time I use my Guest OS.

The workaround I have found that works consists of the following steps:

1. Uninstall the sound driver from the host machine
2. Restart the host machine
3. Install the sound driver on the host machine
4. Run the virtual machines before restarting the host.

This will allow the virtual machine to play audio until the host machine is restarted. I have attached the log file for my Linux Mint VM, as this is the machine I primarily emulate.

[Aassem]

Linux Mint VM VBox.log

[pentagonik]

Has this been working for you with latest VBox 4.3, e.g. 4.3.34? If you did not test this, can you please give this a try?

You can download 4.3.34 here: https://www.virtualbox.org/wiki/Download_Old_Builds_4_3

Have you ensured that you're using the latest audio drivers on your host?

[pentagonik]

Another thing to try out is to use the latest 5.0.x testbuild available here: https://www.virtualbox.org/wiki/Testbuilds