Solution for slow performance Ubuntu 13.10 running in Virtualbox



Ubuntu released the 13.10 version of most popular Linux distro where all major changes are under the hood! But running Ubuntu on VirtualBox, sometimes the Unity 3D is not supported.  After the Upgrade the performance was very bad. You can check your 3D support by typing this line on your Terminal:

/usr/lib/nux/unity_support_test -p

If you don’t get all green, as the screenshot above, the render software is not working. Unity is using slow LLVMpipe.

To enable 3D supported, fist you will need to update linux-headers. Run this lines on Ubuntu Terminal.

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(Host-D shortcut)

cd /media
cd username
cd VBOX*
sudo ./

Insert vboxvideo to /etc/modules – Use your favorite editor es: nano/vi/vim or gedit

sudo gedit /etc/modules


Add “vboxvideo” at the end of the file


Reboot the machine

sudo reboot

Check “Not software rendered” and “Unity 3D supported” are enabled or not after rebooting

/usr/lib/nux/unity_support_test -p

Shutdown the maschine.
The next thing you want to do is to increase video memory. Look for .vbox file

gedit /home/username/VirtualBox VMs/ubuntu/ubuntu.vbox

Find : VRAMSize=”128″

<display vramsize="128" monitorcount="1" accelerate3d="true" accelerate2dvideo="false"></display>

Replace with: VRAMSize=”256″

Relaunch Virtual box and start the Ubuntu Machine! Have fun with 3D Support on Ubuntu Virtual!

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  • Chewbi

    Your post made my day , thanks !


      Your welcome :)

  • hussein

    this didnt work with my ubuntu, idk why

    • hussein

      my ubuntu release is 13.10 and i dont know why this didnt work , please help.


        Follow all the steps as described!


      Are u using a VirtualBox Machine?

  • Fernando

    Perfect !!! Thanks from Brazil…


      You’re welcome!

  • Paul

    For those who still have problems, check and see if 3D acceleration is enabled in Virtual Box. Go to Virtual Box Manager -> Right Click your Ubuntu VM -> Display -> Check Enable 3D Acceleration. This was the fix for me.

    Note, I am not sure if 3D acceleration is fully supported, but it definitely speeds up the machine.