I have a sony vaio desktop (PCV RZ221) which runs windows xp. I installed ubuntu on a separate partition. The install runs fine but the graphics runs on fallback drivers even though it has a nvidia geforce ti 4660 graphics card installed. I have tried installing the nvidia drivers (nvidia-96) which were recommended by the 'Additional Drivers' application. This results in complete garbled text and video. Everything turns white once I restart the system after installing the nvidia drivers. The nouveau drivers do not work etiher. I have tried three different versions of ubuntu (10.10, 11.04 and 11.10) and all of them have the same issue.
Below is the technical information of the motherborad
Technical Platform Architecture SiS 651 CPU Section Processor Name Intel® Pentium® 4 processor Processor Manufacturer Intel Processor Speed (Mhz) 3060 Model 3.06 Ghz Type Pentium IV L2 Cache (kb) 512 Graphics Graphic Card Name nVidia GeForce4 TI4600 Total Graphics Memory (MB) 128