For the time being the driver
xserver-xorg-video-nouveau (1:0.0.10~git+20090823+569a17a-0ubuntu1)
is an experimental one and does not provide necessary graphical environment.
There is no reason to install it.
One should use the official driver nvidia-current (190.53-0ubuntu8) for NVidia cards.
For the time being the driver xorg-video- nouveau (1:0.0. 10~git+ 20090823+ 569a17a- 0ubuntu1)
xserver-
is an experimental one and does not provide necessary graphical environment.
There is no reason to install it.
One should use the official driver nvidia-current (190.53-0ubuntu8) for NVidia cards.