justyna@justyna-K53SV:~$ sudo apt-get --purge remove xserver-xorg-video-nouveau
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages will be REMOVED:
  xserver-xorg-video-all* xserver-xorg-video-nouveau*
0 upgraded, 0 newly installed, 2 to remove and 204 not upgraded.
After this operation, 356 kB disk space will be freed.
Do you want to continue [Y/n]?