xdpyinfo - display information utility for X
xdpyinfo [-display displayname] [-queryExtensions] [-ext extension-name] [-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 commu-
nicating 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 xdpy-
info and the server is displayed.
If -version is specified, xdpyinfo prints its version and exits, without contacting the X
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
X Version 11 xdpyinfo 1.3.1 XDPYINFO(1)