VirtualBox

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Ticket Resolution Summary Owner Reporter
#13602 obsolete choppy system sound beeps in Windows 7 and 8.1 guests Mihai Hanor
Description

You can test this by enabling Toggle Keys (accessibility feature), in Ease of Access Center, and then pressing one of the keys: Caps Lock, Scroll Lock or Num Lock.

Or you can use an Autohotkey script to generate such sounds (see the attached file).

Very short sounds are either not audible (<110ms) or unclear (<170ms), like they're cut short (see the Toggle Keys tones). When played in the host, such sounds are very clear, well defined (50-150ms). It might be something to do with the start of the sound being cut short. Long playing sounds (duration of seconds) do stutter, less regularly on my Windows host, but regularly on my Ubuntu host.

Host OS: Windows 8.1 x64, Ubuntu 14.04 x64 (PulseAudio).

#18885 fixed choppy and distorted USB audio catchy_nickname
Description

VirtualBox is a thing of beauty, but audio via a USB audio headset in the Windows 10 guest is just painful. Audio is slow, choppy and unintelligible.

Host is a 10 core workstation with 128 Gbyte of memory, so it's not the limiting factor. Guest is allocated 4 cores and 8 Gbyte. USB audio device, which is passed through to the guest using the USB filter, is a Plantronics "blackwire" communications headset and Windows detects it as a standard USB duplex audio device.

The following were tried with no success:

  • Allocating more cores and memory to guest.
  • Running VirtualBox with higher priority on host.
  • Different audio bitrates and depths in Windows. (Symptoms improve with higher bitrates, but still bad.)
  • Disabling Windows DSP effects for the device.
  • Disabling 2D and 3D acceleration for the VM.
  • All three USB controller options (OHCI, EHCI, xHCI).
  • Both chipset options (PIIX3 and ICH9).
  • Various combinations of processor virtualization settings in the host BIOS.
  • Various combinations of virtualization and paravirtualization settings in VirtualBox.

A suggested workaround was to not pass the USB device through to the guest but instead just let the guest use the default audio device ("PC speakers and microphone" in Windows), which produces an audio stream in the host that can be routed to the USB headset using Pavucontrol. This always results in a hard crash after several minutes, which is a bug that other users are currently reporting:

https://forums.virtualbox.org/viewtopic.php?f=7&t=91458 https://forums.virtualbox.org/viewtopic.php?f=2&t=94305

For this symptom, various things were tried with no success:

  • PulseAudio vs. ALSA.
  • VirtualBox test build 6.0.11.
#2024 fixed chkdsk freeze Charalabos Michael
Description

Hello, Run -> chkdsk /f c: Reboot After check disk completes it will not reboot the system.

Using Virtual Disk on Sata Port 0. I think it's a bug.

Thanks

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