NVIDIA settings

The `nvidia-settings` utility is a tool for configuring the NVIDIA

Linux graphics driver. It operates by communicating with the NVIDIA

X driver, querying and updating state as appropriate. This

communication is done with the NV-CONTROL X extension.

Values such as brightness and gamma, XVideo attributes, temperature,

and OpenGL settings can be queried and configured via nvidia-settings.

When nvidia-settings starts, it reads the current settings from

its configuration file and sends those settings to the X server.

Then, it displays a graphical user interface (GUI) interface for

configuring the current settings. When nvidia-settings exits, it

queries the current settings from the X server and saves them to

the configuration file.