sudo nano /etc/X11/xorg.conf.d/20-nvidia.conf
Section "Files"
ModulePath "/usr/lib/nvidia/xorg"
ModulePath "/usr/lib/xorg/modules"
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce GTX 550 Ti"
EndSection
glxinfo | grep -E "OpenGL vendor|OpenGL renderer"