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xdpyinfo(1X)

display information utility for X

From the original Amiga UNIX 2.1 manual. Some things it mentions may not be in this release.

Also by this name: xdpyinfo(1), General commands

xdpyinfo - display information utility for X

xdpyinfo [-display displayname]

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.

The following shows a sample produced by xdpyinfo when connected to display that supports an 8 plane screen and a 1 plane screen.

name of display:    :0.0
version number:    11.0
vendor string:    MIT X Consortium
vendor release number:    4
maximum request size:  16384 longwords (65536 bytes)
motion buffer size:  0
bitmap unit, bit order, padding:    32, MSBFirst, 32
image byte order:    MSBFirst
number of supported pixmap formats:    2
supported pixmap formats:


    depth 1, bits_per_pixel 1, scanline_pad 32


    depth 8, bits_per_pixel 8, scanline_pad 32
keycode range:    minimum 8, maximum 129
number of extensions:    4


    SHAPE


    MIT-SHM


    Multi-Buffering


    MIT-SUNDRY-NONSTANDARD
default screen number:    0
number of screens:    2
screen #0:


  dimensions:    1152x900 pixels (325x254 millimeters)


  resolution:    90x90 dots per inch


  depths (2):    1, 8


  root window id:    0x8006e


  depth of root window:    8 planes


  number of colormaps:    minimum 1, maximum 1


  default colormap:    0x8006b


  default number of colormap cells:    256


  preallocated pixels:    black 1, white 0


  options:    backing-store YES, save-unders YES


  current input event mask:    0xd0801d


    KeyPressMask             ButtonPressMask          ButtonReleaseMask        


    EnterWindowMask          ExposureMask             SubstructureRedirectMask 


    PropertyChangeMask       ColormapChangeMask       


  number of visuals:    6


  default visual id:  0x80065


  visual:


    visual id:    0x80065


    class:    PseudoColor


    depth:    8 planes


    size of colormap:    256 entries


    red, green, blue masks:    0x0, 0x0, 0x0


    significant bits in color specification:    8 bits


  visual:


    visual id:    0x80066


    class:    DirectColor


    depth:    8 planes


    size of colormap:    8 entries


    red, green, blue masks:    0x7, 0x38, 0xc0


    significant bits in color specification:    8 bits


  visual:


    visual id:    0x80067


    class:    GrayScale


    depth:    8 planes


    size of colormap:    256 entries


    red, green, blue masks:    0x0, 0x0, 0x0


    significant bits in color specification:    8 bits


  visual:


    visual id:    0x80068


    class:    StaticGray


    depth:    8 planes


    size of colormap:    256 entries


    red, green, blue masks:    0x0, 0x0, 0x0


    significant bits in color specification:    8 bits


  visual:


    visual id:    0x80069


    class:    StaticColor


    depth:    8 planes


    size of colormap:    256 entries


    red, green, blue masks:    0x7, 0x38, 0xc0


    significant bits in color specification:    8 bits


  visual:


    visual id:    0x8006a


    class:    TrueColor


    depth:    8 planes


    size of colormap:    8 entries


    red, green, blue masks:    0x7, 0x38, 0xc0


    significant bits in color specification:    8 bits


  number of mono multibuffer types:    6


    visual id, max buffers, depth:    0x80065, 0, 8


    visual id, max buffers, depth:    0x80066, 0, 8


    visual id, max buffers, depth:    0x80067, 0, 8


    visual id, max buffers, depth:    0x80068, 0, 8


    visual id, max buffers, depth:    0x80069, 0, 8


    visual id, max buffers, depth:    0x8006a, 0, 8


  number of stereo multibuffer types:    0
screen #1:


  dimensions:    1152x900 pixels (325x254 millimeters)


  resolution:    90x90 dots per inch


  depths (1):    1


  root window id:    0x80070


  depth of root window:    1 plane


  number of colormaps:    minimum 1, maximum 1


  default colormap:    0x8006c


  default number of colormap cells:    2


  preallocated pixels:    black 1, white 0


  options:    backing-store YES, save-unders YES


  current input event mask:    0xd0801d


    KeyPressMask             ButtonPressMask          ButtonReleaseMask        


    EnterWindowMask          ExposureMask             SubstructureRedirectMask 


    PropertyChangeMask       ColormapChangeMask       


  number of visuals:    1


  default visual id:  0x80064


  visual:


    visual id:    0x80064


    class:    StaticGray


    depth:    1 plane


    size of colormap:    2 entries


    red, green, blue masks:    0x0, 0x0, 0x0


    significant bits in color specification:    1 bits


  number of mono multibuffer types:    1


    visual id, max buffers, depth:    0x80064, 0, 1


  number of stereo multibuffer types:    0

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

X(1), xwininfo(1), xprop(1), xrdb(1)

Copyright 1988, 1989, Massachusetts Institute of Technology.
See X(1) for a full statement of rights and permissions.

Jim Fulton, MIT X Consortium

Release 4 X Version 11