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alt-nvidia-current-updates-settings(1) -q
configure the NVIDIA graphics driver
-q, --query=QUERY
       The QUERY argument to the '--query' command line option is of the form:

         {DISPLAY}/{attribute name}[{display devices}]

       This  queries the current value of the attribute {attribute name} on the X Display {DISPLAY}.  The
       syntax is the same as that for the '--assign' option, without '= {value}' ; specify '-q  screens',
       '-q  gpus', '-q framelocks', '-q vcs', '-q gvis', or '-q fans' to query a list of X screens, GPUs,
       Frame Lock devices, Visual Computing Systems, SDI Input Devices, or Fans, respectively,  that  are
       present on the X Display {DISPLAY}.  Specify '-q all' to query all attributes.


nvidia-settings Starts the nvidia-settings graphical interface.
nvidia-settings --load-config-only Loads the settings stored in ~/.nvidia-settings-rc and exits.
nvidia-settings --rewrite-config-file Writes the current X server configuration to ~/.nvidia-settings-rc file and exits.
nvidia-settings --query FSAA Query the value of the full-screen antialiasing setting.
nvidia-settings --assign RedGamma=2.0 --assign BlueGamma=2.0 --assign GreenGamma=2.0 Set the gamma of the screen to 2.0.

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