Ok. I installed Ubuntu 11.10 on my computer and everything works fine. I installed Compiz config Settings, and it shows that the Ubuntu Unity Plugin is unchecked. I researched and found out that I am running Unity 2D (even when i log in under "ubuntu"). When I check the Ubuntu Unity Plugin in Compiz, it opens Unity 3d (i assume). But the Unity 2d launcher is still running. They are on top of each other and the icons in the 3D launcher are not visible, however when i run my cursor over them, the bubbles show up (firefox, dash home, etc..) How can I disable Unity 2D and enable just the 3D? And how can i make the icons visible?
Installing Compiz Config Settings does not assure you can run Unity 3D. Open a Terminal and type
It would help to know the video card you have. If it supports the OpenGL minimum requirements for unity 3D then it will work. If not then even if you change anything in compiz you will not have Unity 3D or any of the effects associated with it.
It also helps if your card has a proprietary driver or not. In the cases of Nvidia and Ati cards you have an option to install the proprietary drivers (Via the "Additional Drivers" app). But in both cases, the open source drivers that come by default for both of them already work with Unity 3D.
In the cases for Intel cards, very old models will have it difficult to work with Unity 3D so they will "fallback" to Unity 2D even if you select Unity 3D. This is a way Ubuntu handles the lack of support for the 3D version of Unity in the PC.
To install the latest Proprietary or Open source drivers for Ati/Nvidia You can install the PPA here: https://launchpad.net/~ubuntu-x-swat/+archive/x-updates
Also look here for more info: How to install ATI Radeon 6770 drivers on 10.04?