Hi. I've just bought a new notebook. It has an external graphic card: AMD Radeon HD 7670M 2GB. I installed Ubuntu 12.10. I've been trying to install the driver for more than 2 hours. However, I couldn't do it yet. When I try to install the drivers that Ubuntu indicates, I reboot my PC, an error occurs: You are using low-graphics... (like that). I also downloaded the driver from AMD web site. I faced this situation again. Please help me about what I should do. Thanks in advance...