Reinstall default graphics driver on Ubuntu

reset-display.md

Remove installed nvidia driver & reset to default graphics driver

On Ubuntu 15.10, after installing the nvidia proprietary driver, it didn't quite work as expected...going down to older version made it work, but graphics were slow. Run the below to reset back to the original graphics setup.

sudo apt-get purge nvidia-*
sudo apt-get install --reinstall xserver-xorg-video-intel libgl1-mesa-glx libgl1-mesa-dri xserver-xorg-core
sudo dpkg-reconfigure xserver-xorg

# May not have any alternatives configured (ok to skip)
sudo update-alternatives --remove gl_conf /usr/lib/nvidia-current/ld.so.conf

Do not forget to move your settings before reinstallation:
sudo mv /etc/X11/xorg.conf /etc/X11/xorg.conf.bk
It crashed my system without moving as nvidia driver settings were there.

Thx it worked for me on 20.04