Comment 4 for bug 868889

I also have a similar problem (I am running oneiric) and experienced it while using either the drivers 280.13 or the drivers from the 285 series provided by the ubuntu-x-swat.

Everything was totally fine, then, suddenly, I fired the dash, my screen blinked and I started to get terrible problems with screen refresh : to remove the residuals of a previous window or to refresh any window, I have to draw some squares with the mouse around them or press the "super" key.

I tried to remove (apt-purge) and reinstall all the nvidia packages and reinstalled the XFree with no success.

I don't have this problem while using the 173 series nvidia driver (but got different problem, though).

Now, I am using Unity 2D without any issue but hope to be able to switch back to 3D as soon as possible.