Ubuntu runs very slowly inside of VirtualBox.
How do I run Ubuntu with unity or enabled transparency smoothly with VirtualBox?
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Graphic/performance fix for Ubuntu was tested with Ubuntu 13.04, 12.10, and 12.04. Part of this solution applies where aero / transperancy is used including d3d games.
Recommended graphic memory or virtual ram for aero based operating systems is 256 MB min.ram -768 MB for 13.04
enable 3d support in virtualbox 3d settings
(Not software rendered:no, unity 3d support:No)
uname -r sudo apt-get install linux-headers-$(uname -r) sudo apt-get autoremove sudo apt-get install build-essential
now insert vitualbox guest iso from devices and to install manually follow
cd /media ls cd username ls cd VBOX* ls sudo ./VBoxLinuxAdditions.run sudo gedit /etc/modules
add "vboxvideo" in the next line after lp means
loop>lp>vboxvideo like this click save and file quit
restart the machine
now open the terminal to checkunity 3d is enabled or not
after this shut down the machine lets increase the virtual ram
close virtual machine and virtual box
follow this path
C:\Users\Username\VirtualBox VMs\ubuntu 13.04
now look for ".vbox" extension file and open it with temporarily with wordpad
look for the following lines and replace these in following manner
Display VRAMSize="128" monitorCount="1" accelerate3D="true" accelerate2DVideo="false"/>
Display VRAMSize="256" monitorCount="1" accelerate3D="true" accelerate2DVideo="false"/>
now you can set 256 mb virtual memory for this operating system.
any OS can be provided with desired vram this way
babarehner @ e-wrench.com and youtube
sanct on http://ubuntuforums.org/forum.php
rpxmac on forums.virtualbox.org
Make sure you enable 3D support on Virtualbox, and on guest Ubuntu virtualbox setting. Also give your virualbox enough RAM and cpu cores. Having dedicated VGA will help virtualbox performance as well. How to fix slow performance ubuntu 13.04 running in virtualbox