Вот бета-драйвера вроде как
http://www.nvidia.com/object/linux_display_ia32_100.14.06.html
Этот драйвер не поддерживает GeForce2 MX/MX 400.
http://us.download.nvidia.com/XFree86/Linux-x86/100.14.06/README/appendix-a.html
...
Below are the legacy GPUs that are no longer supported in the unified
driver. These GPUs will continue to be maintained through the special
legacy NVIDIA GPU driver releases.
The 1.0-96xx driver supports the following set of GPUs:NVIDIA GPU
product Device PCI ID
GeForce2 MX/MX 400 0x0110
...