virtualbox.org

Hi,
I recently tried to get "Propellorheads Record / Reason" working on a Windows XP VM (I am running Ubuntu 11.04) and everything worked fine except for the audio output which had a lag of ~ 0.8 secs. I have an external USB audio interface (Tascam US 122L) and tried to get it working but as soon as i enable the passthrough to windows the VM crashes (just shuts down completely). I thought that this might solve the audio lag because VirtualBox then no longer has to emulate a soundcard and pass the sound to pulseaudio, which then again passes it to alsa and so on.
I tried it with Windows XP (with and without recovery mode) as well as with Windows 7.
So, do you have any idea how I could solve that or do you maybe even have a working audio interface yourself and could recommend it?

Switching to windows is no alternative for me!

cheers

edit:// the last two lines from the log are:
00:00:47.172 VUSB: attached '0000000002815660[proxy 0644:800e]' to port 1
00:00:47.174 OHCI: USB Operational

then the VM crashes

edit://
dmesg shows:
[ 7460.402501] VirtualBox[31044]: segfault at 0 ip 00007fbed6cf997e sp 00007fbeb5d2c8f8 error 4 in libc-2.13.so[7fbed6c6f000+18a000]
[ 7695.859968] VirtualBox[31152]: segfault at 0 ip 00007f3bbb53f97e sp 00007f3b9a59c8f8 error 4 in libc-2.13.so[7f3bbb4b5000+18a000]

11.04 has issues and more than likely your problem.
It more than likely will have issues even when released for a while, they always do.

It didn't work with 10.10 either.

http://www.virtualbox.org/ticket/8699

Hi, I would like to follow up on this promising thread, since I seem to have a similar problem.

Host: Win7 64
Guest: WinXP 32
Vbox Version: 4.16 PUEL

Soundcard: Tascam US-122MKII

Problem: The driver installation crashes the guest AND the host. After installtion the Tascam Control Panel item appears in the guests Control Panel, no uninstallation possible.
I haven't installed the (64bit) drivers in the host, since I thought they are no good anyway for the 32bit guest.
I've registered the Tascam 122 in the USB section of the guest.

By what I gather from this thread (and the linked ticket), it was a vbox issue that was simply solved by update. I am running the latest vbox version but still no avail.

Any suggestions?

Thanks for reading,

dexter

I have a VirtualBox 4.1.8 mounted on iMac, O X, guest O.S. is Windows 7 ultimate. I connected a Tascam us-122L because I need to use a Shure microphone under some windows programs.
The Tascam was successfully recognized and installed with latest drivers, but once I select it as Defualt input voice system nothing happens, no sound seems to enter in Windows. Sound level remains always at zero level in contro panel /sound , no sound is recorded, nothing. Mixer levels ar checked and fully at maximum level. The Tascam seems to work properly, the led respond once you speak into the microphone but is like nothing geos from the Tascam via the USB cable into the computer.
I guess it's something in the USB interface under the virtual machine , but what exactly?
Please note that the same interface works under the Mac sytem, and works on another native PC with same Windwos 7 on. The UBS under virutalbox seem otherwise to run perfectly, I can easily plug in them pendrive and they works but apparently the Tascam is not fully recognized or drived.
Any help? Thanks. Enrico

eferrari wrote:Any help?

See viewtopic.php?f=2&t=46946#p212021

jorgensen wrote:

eferrari wrote:Any help?

To my knowledge you cannot run a DAW in a virtual environment because the lack of virtual audio support.
To use multichannel audio, the USB driver must support USB Audio, and I have found no information that VirtualBox actual does this.
I have succeeded with an USB audio stick with 2 channel, but haven't checked the latency.
For the VirtualBox USB, the bandwidth is rather limited, and my guess is you will get a latency that is unacceptable.
The only solution I have found to run DAW properly in a virtual environment is to use Ethernet, but external audio box for this interface is almost absent - only know of one OEM manufacture.

I see. Thaks a lot even if seems a final bad word on it, no way at all? because of USB drivers of the Virtual machine I will NEVER be able to do that? Is it a problem of virtualization, so it will always happen with other program of virtualization, or just a lack of virtual box?

eferrari wrote:because of USB drivers of the Virtual machine I will NEVER be able to do that? Is it a problem of virtualization, so it will always happen with other program of virtualization, or just a lack of virtual box?

You can try one of the below universal drivers which basically uses the same software from http://www.thesycon.de as most other USB audio boxes do. They might be interested to provide further information.

http://www.centrance.com/downloads/ud/
http://www.usb-audio.com/

I have a VirtualBox 4.1.8 mounted on iMac, O X, guest O.S. is Windows 7 ultimate. I connected a Tascam us-122L because I need to use a Shure microphone under some windows programs.
The Tascam was successfully recognized and installed with latest drivers, but once I select it as Defualt input voice system nothing happens, no sound seems to enter in Windows. Sound level remains always at zero level in contro panel /sound , no sound is recorded, nothing. Mixer levels ar checked and fully at maximum level. The Tascam seems to work properly, the led respond once you speak into the microphone but is like nothing geos from the Tascam via the USB cable into the computer.
I guess it's something in the USB interface under the virtual machine , but what exactly?
Please note that the same interface works under the Mac sytem, and works on another native PC with same Windwos 7 on. The UBS under virutalbox seem otherwise to run perfectly, I can easily plug in them pendrive and they works but apparently the Tascam is not fully recognized or drived.
Any help? Thanks. Enrico

I have a very similar situation. I own/have:
iMac 27"
Focusrite Scarlett 2i4 USB
OSX10.8.5 (Mt Lion)
VirtualBox 4.3.26
Windows 7 Ultimate (running in VirtualBox)

The Scarlett 2i4 works great running natively in OSX. Though it's a different story when using VirtualBox running Win7. I installed the Focusrite Scarlett drivers for Windows, and while the installation was successful and I even see the USB hardware in Windows7 "Devices and Printers" window, and "Sound" both Playback and Recording tabs... I hear no music getting played back, nor bars bouncing during audio input.

Grrrr..