When I move my mouse around in Ubuntu 12.10 it flickers. When it's not moving it disappears.
- Macbook Pro 7.1
- Nvidia 320m
- Ubuntu 12.10
software sources -> Additional Drivers
and see what driver your nvidia card is using. I have the same setup and found that using the nvidia-experimental-304 driver worked best for me.
Scroll all the way to the right to see the names of the drivers, and see this post for more information on which drivers allow you to shutdown properly.
Refer to this guide for more information on fully utilizing your macbook pro 7,1 with ubuntu 12.10.