Hello, I just installed linux mint into my Astone UMPC (Ultra Mobile Personal Computer). It has a 7-inch screen, 600 VIA C-7 mhz processor, and 1 gb ram. It doesn't have sound and sometimes the screen freezes. When I run applications such as open office, the screen will partially turn to white which can be removed by pointing the mouse pointer on the white parts. Do I need to install video and audio drivers? If yes, where can I find and how can I install those drivers? Help is very much appreciated.