VirtualBox

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Ticket Resolution Summary Owner Reporter
#3680 fixed audio problem richard
Description

Hi,

I use VirtualBox for school on a LTSP server host (ubuntu 8.10). The Hypervisor optimizations of 2.2's version are effectively best :

I can run 2 VM who play video in Giga with 1,4Go of RAM (2.1 : the server take all the free memory and swap).

Well, I have some problems with the sound :

  • The sound is clear with SB16 but the micro didn't work
  • The sound is chopped with ICH AC97 but the micro seems worked

On the server or on a thin client.

#6026 fixed audio does not sync to video (audio lags behind) in XP guest on VB3.1.2 on Fedora 12 host James Heather
Description

Playing any kind of video results in the audio noticeably lagging behind the video. This happens in all applications; youtube is a quick way to verify the problem.

Both video and audio are smooth, but the audio lags behind. Maybe there is some buffering between the guest and the host that causes a delay here?

This is a total killer for video editing, which is my main reason for using VirtualBox. It is not practical to edit videos under VB because I can't tell whether I'm producing properly synchronized video or not.

I am running a 32-bit XP guest on a Fedora 12 host. This is with VB3.1.2, but it has been a problem right back as far as I can remember (at least back to Fedora 9, and VB2.x). I don't know whether the same problem exists with other hosts and other guests.

Ta.

James

#9884 duplicate attempting to run a 64 bits guest reboot the linux host (AMD) zebul6
Description

I am running Archlinux 32 bits, up to date as of 2011-11-10. with a 3.1 kernel on an inspiron 531 with an AMD Athlon(tm) 64 X2 Dual Core Processor 4400+ AuthenticAMD

For the record, I am able to run Ubuntu 11.10 64 bits on this box natively

The issue/bug: When I attempt to run any (either windows 7 64 bits or ubuntu 11.10 64 bits, and I think I could enlarge the list to whatever you like) with virtualbox 4.1.6, it blacken the screen and reboot the box/pc!

I was expecting this to be fixed other time but I see no improvement. This is not a new bug. It happens since at least vbox 4, kernel 2.6.39

I think it has to do with the linux kernel but I can't be sure.

Scenario: Attempting to install Windows 7 64 bits by booting the iso/dvd

With PAE/NX enabled with IO-APIC activated, it freezes after displaying "Starting Windows"

With PAE/NX enabled without IO-APIC activated, it rebooted right after "Starting Windows" is displayed after the "Windows is loading files" screen

If I enable PAE/NX with IO-APIC, it reboots as soon as "Starting Windows" is displayed

One get a similar experience attemting to install ubuntu 11.10 64 bits from vbox (not sure about the config of the VM)

Also booting ubuntu 11.10 64 bits from a real partition with vbox in archlinux 32 bits, gives a reboot as soon as the boot process begins (after grub screen)

Also booting Windows 7 Home Premium 64 bits from a real partition with vbox in archlinux 32 bits) gives also a reboot

I have gave up trying to use anything 64 bits with vbox because of that reboot.

I got no problem running Ubuntu 11.10 64 bits (from a real partition) from Windows 7 Home Premium 32 bits with virtualbox.

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