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As expected, Nvidia drivers have reduced my customizations. I can't login to Unity 3D session. I can't find any content to help me to uninstall the driver and I don't know what to do as I have never uninstalled them before.

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About the unity, do "unity --reset" –  Nick Bailuc Mar 9 at 17:49

2 Answers 2

up vote 40 down vote accepted

For Ubuntu 12.04

Commands can be executed to terminal. You can open a terminal with Ctrl + Alt+T keys combo.

If you remove --purge the nvidia driver you will be OK. No need to blacklist something, but sometimes maybe a force-load of the nouveau module needed.

First uninstall completely the driver.

Search what packages from nvidia you have installed.

dpkg -l | grep -i nvidia

except the package nvidia-common all other packages should be purged.


If you want to be sure that you will purge everything related to nvidia you can give this command

sudo apt-get remove --purge nvidia-*

the asterisk in the end means (Purge everything that begins with the name nvidia-)

BUT

above command will also remove the nvidia-common package and the nvidia-common package has as a dependency the ubuntu-desktop package.

So after above command you should also give the installation command for ubuntu-desktop package

sudo apt-get install ubuntu-desktop

Also sometimes the nouveau driver get blacklisted from nvidia driver. With purge command it should UN-blacklisted. If you want to be sure that nouveau will be load in boot, you can force-load it by add it to /etc/modules

echo 'nouveau' | sudo tee -a /etc/modules

Last , search for the xorg.conf file and remove it as well

sudo rm /etc/X11/xorg.conf

In summary

sudo apt-get remove --purge nvidia-*
sudo apt-get install ubuntu-desktop
sudo rm /etc/X11/xorg.conf
echo 'nouveau' | sudo tee -a /etc/modules

Although all above commands not needed, this is my way to completely purge the nvidia driver and use the open source nounveau.

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Worked like a charm. Thanks! This was exactly what I needed. –  VedVals Oct 25 '12 at 14:43
4  
Your recipe just solved for me a similar problem that kept me last night fiddling with my computer until 3 am. Not enough thanks. –  Jorge M. Treviño Feb 22 '13 at 18:46
    
Yes indeed it worked as a charm!! –  alvas Apr 27 '13 at 6:43
    
thanks, this was effective on ubuntu 13.10 –  bsautner Oct 25 '13 at 12:53
    
This answer is still helping out! Fixed my Lubuntu 13.10. Thanks! –  travisw Feb 3 at 15:02

To uninstall nVIDIA driver, open terminal by pressing (Ctrl+Alt+T) then type:

sudo apt-get purge nvidia-current
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protected by Community Mar 9 at 19:46

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