NAME

       xdpyinfo - display information utility for X

SYNOPSIS

       xdpyinfo [-display displayname] [-queryExtensions] [-ext extension-name] [-version]

DESCRIPTION

       Xdpyinfo is a utility for displaying information about an X server.  It is used to examine
       the capabilities of a server,  the  predefined  values  for  various  parameters  used  in
       communicating  between  clients  and  the  server,  and the different types of screens and
       visuals that are available.

       By default, numeric information (opcode, base event, base error) about protocol extensions
       is not displayed.  This information can be obtained with the -queryExtensions option.  Use
       of this option on servers that dynamically load extensions will likely cause all  possible
       extensions to be loaded, which can be slow and can consume significant server resources.

       Detailed information about a particular extension is displayed with the -ext extensionName
       option.  If extensionName is all, information  about  all  extensions  supported  by  both
       xdpyinfo and the server is displayed.

       If  -version is specified, xdpyinfo prints its version and exits, without contacting the X
       server.

ENVIRONMENT

       DISPLAY To get the default host, display number, and screen.

SEE ALSO

       X(7), xprop(1), xrdb(1), xwininfo(1), xrandr(1), xdriinfo(1), xvinfo(1), glxinfo(1)

AUTHOR

       Jim Fulton, MIT X Consortium
       Support for the XFree86-VidModeExtension, XFree86-DGA, XFree86-Misc,  and  XKB  extensions
       added by Joe Moss