How do I remove a manually installed GPU driver in Ubuntu 18.04?

Question

As seen below "Additional Drivers" claim I have a manually installed driver.

I want to go back to not having "manually installed" driver anymore in this GUI, but they are all greyed out.

What I've done:

• I did uninstall the manually installed driver with:

  sudo nvidia-uninstall
  

  and followed the instructions, then rebooted.

• I purged everything nvidia with:

  sudo apt-get remove --purge nvidia-*
  sudo apt-get remove --purge libnvidia-*
  

• I also ran the uninstaller from the file I installed the manual driver to begin with:

  sudo NVIDIA-Linux-x86_64-418.43.run --uninstall
  

• I've updated through apt, rebooted 3 times.

What I've not done and why:

I can't find xorg.conf anywhere on my system so I've not deleted that.

Graphics info in terminal

So can someone please help me find how to make it possible to choose a driver in the GUI again without having to reinstall the entire OS?

Answer 1

I was in the same situation. I had done everything as you. What did the "trick" after all that steps is this command:

sudo ubuntu-drivers autoinstall

Then I rebooted the system and I was able to use the proprietary Nvidia driver again.

Answer 2

What worked for me was:

1)In the terminal:

sudo apt remove nvidia-*
sudo apt autoremove
sudo apt autoclean

2)Then manually select the driver you want to switch to in the Additional Drivers app

3)Reboot

4)Then in the terminal:

sudo apt autoremove
sudo apt autoclean

5)Happy days.