XDPYINFO(1) X Version 11 XDPYINFO(1)
xdpyinfo - display information utility for X
xdpyinfo [-display displayname] [-queryExtensions] [-ext extension-name]
[-help | -version]
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 -help is specified, xdpyinfo prints its usage message and exits,
without contacting the X server.
If -version is specified, xdpyinfo prints its version and exits,
without contacting the X server.
DISPLAY To get the default host, display number, and screen.
X(7), xprop(1), xrdb(1), xwininfo(1), xrandr(1), xdriinfo(1),
xvinfo(1), glxinfo(1)
Jim Fulton, MIT X Consortium
Support for the XFree86-VidModeExtension, XFree86-DGA, XFree86-Misc,
and XKB extensions added by Joe Moss
xdpyinfo 1.4.0 2025-03-23 XDPYINFO(1)
NAME
xdpyinfo - display information utility for X
SYNOPSIS
xdpyinfo [-display displayname] [-queryExtensions] [-ext extension-name]
[-help | -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 -help is specified, xdpyinfo prints its usage message and exits,
without contacting the X server.
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
xdpyinfo 1.4.0 2025-03-23 XDPYINFO(1)