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I am using ubuntu 12.10 and unity as my desktop. recently I installed the nvidia driver using the package nvidia-current-updates but after that, when I move my mouse to the left side of the screen the launcher bar won't show up, what should I do??

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If you have problem(s) with open source - nouveau, tell (post a comment) me to edit my answer – NikTh Nov 30 '12 at 16:52
yes, nouveau driver don't have the functionality that I want. For example running a 3D game with wine will have low FPS but with the nvidia driver it will work fine – Sinapse Nov 30 '12 at 17:09
up vote 1 down vote accepted

Revert back to open source nouveau (driver for nvidia). Why you installed nvidia additional driver ? Did you have any problem(s) with the nouveau ?

If you want to revert back execute below commands with order.

sudo apt-get remove --purge nvidia-*
sudo rm /etc/X11/xorg.conf #if file does not exit is OK# 
sudo apt-get install nvidia-common ubuntu-desktop
sudo apt-get install --reinstall xserver-xorg-video-nouveau
sudo dpkg-reconfigure xserver-xorg 

and reboot your PC.

If you want the nvidia additional (restricted) drivers and the nvidia-current or nvidia-current-updates not working for you , then try the experimental ones.

Nvidia-experimental-304 , terminal installation

sudo apt-get install --reinstall linux-headers-generic 
sudo apt-get install --reinstall linux-source dkms
sudo apt-get install nvidia-experimental-304 nvidia-settings-experimental-304
sudo nvidia-xconfig

and reboot your PC.

Nvidia-experimental-310 terminal installation after nvidia-experimental-304 has been installed

sudo apt-get remove nvidia-*
sudo rm /etc/X11/xorg.conf
sudo apt-get install nvidia-experimental-310 nvidia-settings-experimental-310
sudo nvidia-xconfig 

Before install any additional Nvidia driver please see here what graphic cards supported. Click upon the driver you want to install and then supported products.

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Thanks, the experimental 304 solved it for me ;) – Sinapse Dec 1 '12 at 7:11
typo at reisntall – yuttadhammo Apr 27 '13 at 13:57
Thanks @Yuttadhammo – NikTh Apr 28 '13 at 4:49

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