Description:

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.