I was using Ubuntu 12.10 in my VirtualBox4.2.12 on my Windows7 Host. They worked good. But when I install Ubuntu 13.04 in VirtualBox 4.2.12, the screen and display are very slow. I have followed this post <How do I resolve slow and choppy performance in virtualbox?> to enable 3D Acceleration.
Now the performance issue is resolved, but the Unity, launcher and dash are gone. I have tried to disable 3D Acceleration, the Unity can be displayed, but the performance issue come again. Please see my screenshot.
Is there anyone has the same issue? I have searched the answer from this site, all the answers are pointed to How do I resolve slow and choppy performance in virtualbox?
Please help me, thanks.