---

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"