It indicate "Experience:standard" on graphics driver. What does it mean, is there any other experience other than standard? or can it be upgraded?
Madison is simply AMD/ATI's code name for the Mobility Radeon HD 56xx/57xx series GPUs (laptop video cards):
This description indicates that you have one of these GPUs in your laptop, and that Ubuntu is successfully using the proprietary fglrx driver; no changes are necessary.
- "Standard" is the normal graphics experience, allowing the use of the Unity (3D) desktop; it's not possible to "upgrade" it.