I am new to android. I have below configuration on my system.

OS: ubuntu 9.04 (partitioned memory 60 GB)
Java version:
Android SDK: 2.2
Eclipse: Ganymade

Whenever i am launching the android emulator then my screen pixels are breaking and colour of full screen is messing up. Can anybody tell me what is the problem?

I have windows7 in second partition. And my Laptop is Dell inspiron-15R. It has ATI graphics card also.