Xorg [:display] [option ...]
Xorg is a full featured X server that was originally designed for UNIX
  and UNIX-like operating systems running on Intel x86 hardware. It now runs on
  a wider range of hardware and OS platforms.
This work was derived by the X.Org Foundation from the XFree86
    Project's XFree86 4.4rc2 release. The XFree86 release was
    originally derived from X386 1.2 by Thomas Roell which was
    contributed to X11R5 by Snitily Graphics Consulting Service.
Xorg operates under a wide range of operating systems and hardware
  platforms. The Intel x86 (IA32) architecture is the most widely supported
  hardware platform. Other hardware platforms include Compaq Alpha, Intel IA64,
  AMD64, SPARC and PowerPC. The most widely supported operating systems are the
  free/OpenSource UNIX-like systems such as Linux, FreeBSD, NetBSD, OpenBSD, and
  Solaris. Commercial UNIX operating systems such as UnixWare are also
  supported. Other supported operating systems include GNU Hurd. Mac OS X is
  supported with the Xquartz(1) X server. Win32/Cygwin is supported with the
  XWin(1) X server.
Xorg supports connections made using the following reliable byte-streams:
  - Local
- On most platforms, the "Local" connection type is a UNIX-domain
      socket. On some System V platforms, the "local" connection types
      also include STREAMS pipes, named pipes, and some other mechanisms. See
      the "LOCAL CONNECTIONS" section of X(7) for details.
- TCP/IP
- Xorg listens on port 6000+n, where n is the display
      number. This connection type is usually disabled by default, but may be
      enabled with the -listen option (see the Xserver(1) man page for
      details).
Xorg supports several mechanisms for supplying/obtaining configuration
  and run-time parameters: command line options, environment variables, the
  xorg.conf(5) configuration files, auto-detection, and fallback defaults. When
  the same information is supplied in more than one way, the highest precedence
  mechanism is used. The list of mechanisms is ordered from highest precedence
  to lowest. Note that not all parameters can be supplied via all methods. The
  available command line options and environment variables (and some defaults)
  are described here and in the Xserver(1) manual page. Most configuration file
  parameters, with their defaults, are described in the xorg.conf(5) manual
  page. Driver and module specific configuration parameters are described in the
  relevant driver or module manual page.In addition to the normal server options described in the
    Xserver(1) manual page, Xorg accepts the following command line
    switches:
  - vtXX
- XX specifies the Virtual Terminal device number which Xorg
      will use. Without this option, Xorg will pick the first available
      Virtual Terminal that it can locate. This option applies only to platforms
      that have virtual terminal support, such as Linux, BSD, OpenSolaris, SVR3,
      and SVR4.
- -allowMouseOpenFail
- Allow the server to start up even if the mouse device can't be opened or
      initialised. This is equivalent to the AllowMouseOpenFail
      xorg.conf(5) file option.
- -allowNonLocalXvidtune
- Make the VidMode extension available to remote clients. This allows the
      xvidtune client to connect from another host. This is equivalent to the
      AllowNonLocalXvidtune xorg.conf(5) file option. By default
      non-local connections are not allowed.
- -bgamma value
- Set the blue gamma correction. value must be between 0.1 and 10.
      The default is 1.0. Not all drivers support this. See also the
      -gamma, -rgamma, and -ggamma options.
- -bpp n
- No longer supported. Use -depth to set the color depth, and use
      -fbbpp if you really need to force a non-default framebuffer
      (hardware) pixel format.
- -config file
- Read the server configuration from file. This option will work for
      any file when the server is run as root (i.e, with real-uid 0), or for
      files relative to a directory in the config search path for all other
      users.
- -configdir directory
- Read the server configuration files from directory. This option
      will work for any directory when the server is run as root (i.e, with
      real-uid 0), or for directories relative to a directory in the config
      directory search path for all other users.
- -configure
- When this option is specified, the Xorg server loads all video
      driver modules, probes for available hardware, and writes out an initial
      xorg.conf(5) file based on what was detected. This option currently has
      some problems on some platforms, but in most cases it is a good way to
      bootstrap the configuration process. This option is only available when
      the server is run as root (i.e, with real-uid 0).
- -crt /dev/ttyXX
- SCO only. This is the same as the vt option, and is provided for
      compatibility with the native SCO X server.
- -depth n
- Sets the default color depth. Legal values are 1, 4, 8, 15, 16, and 24.
      Not all drivers support all values.
- -disableVidMode
- Disable the parts of the VidMode extension (used by the xvidtune client)
      that can be used to change the video modes. This is equivalent to the
      DisableVidModeExtension xorg.conf(5) file option.
- -fbbpp n
- Sets the number of framebuffer bits per pixel. You should only set this if
      you're sure it's necessary; normally the server can deduce the correct
      value from -depth above. Useful if you want to run a depth 24
      configuration with a 24 bpp framebuffer rather than the (possibly default)
      32 bpp framebuffer (or vice versa). Legal values are 1, 8, 16, 24, 32. Not
      all drivers support all values.
- -flipPixels
- Swap the default values for the black and white pixels.
- -gamma value
- Set the gamma correction. value must be between 0.1 and 10. The
      default is 1.0. This value is applied equally to the R, G and B values.
      Those values can be set independently with the -rgamma,
      -bgamma, and -ggamma options. Not all drivers support
    this.
- -ggamma value
- Set the green gamma correction. value must be between 0.1 and 10.
      The default is 1.0. Not all drivers support this. See also the
      -gamma, -rgamma, and -bgamma options.
- -ignoreABI
- The Xorg server checks the ABI revision levels of each module that
      it loads. It will normally refuse to load modules with ABI revisions that
      are newer than the server's. This is because such modules might use
      interfaces that the server does not have. When this option is specified,
      mismatches like this are downgraded from fatal errors to warnings. This
      option should be used with care.
- -isolateDevice bus-id
- Restrict device resets to the device at bus-id. The bus-id
      string has the form
      bustype:bus:device:function
      (e.g., ‘PCI:1:0:0’). At present, only isolation of PCI
      devices is supported; i.e., this option is ignored if bustype is
      anything other than ‘PCI’.
- -keeptty
- Prevent the server from detaching its initial controlling terminal. If you
      want to use systemd-logind integration you must specify this option. Not
      all platforms support (or can use) this option.
- -keyboard keyboard-name
- Use the xorg.conf(5) file InputDevice section called
      keyboard-name as the core keyboard. This option is ignored when the
      Layout section specifies a core keyboard. In the absence of both a
      Layout section and this option, the first relevant InputDevice
      section is used for the core keyboard.
- -layout layout-name
- Use the xorg.conf(5) file Layout section called layout-name.
      By default the first Layout section is used.
- -logfile filename
- Use the file called filename as the Xorg server log file.
      The default log file when running as root is
      /var/log/Xorg.n.log and for non root it is
      $XDG_DATA_HOME/xorg/Xorg.n.log where n is the
      display number of the Xorg server. The default may be in a
      different directory on some platforms. This option is only available when
      the server is run as root (i.e, with real-uid 0).
- -logverbose [n]
- Sets the verbosity level for information printed to the Xorg server
      log file. If the n value isn't supplied, each occurrence of this
      option increments the log file verbosity level. When the n value is
      supplied, the log file verbosity level is set to that value. The default
      log file verbosity level is 3.
- -modulepath searchpath
- Set the module search path to searchpath. searchpath is a
      comma separated list of directories to search for Xorg server
      modules. This option is only available when the server is run as root
      (i.e, with real-uid 0).
- -noautoBindGPU
- Disable automatically setting secondary GPUs up as output sinks and
      offload sources. This is equivalent to setting the AutoBindGPU
      xorg.conf(5) file option. To false.
- -nosilk
- Disable Silken Mouse support.
- -novtswitch
- Disable the automatic switching on X server reset and shutdown to the VT
      that was active when the server started, if supported by the OS.
- -pointer pointer-name
- Use the xorg.conf(5) file InputDevice section called
      pointer-name as the core pointer. This option is ignored when the
      Layout section specifies a core pointer. In the absence of both a
      Layout section and this option, the first relevant InputDevice
      section is used for the core pointer.
- -quiet
- Suppress most informational messages at startup. The verbosity level is
      set to zero.
- -rgamma value
- Set the red gamma correction. value must be between 0.1 and 10. The
      default is 1.0. Not all drivers support this. See also the -gamma,
      -bgamma, and -ggamma options.
- -sharevts
- Share virtual terminals with another X server, if supported by the
    OS.
- -screen screen-name
- Use the xorg.conf(5) file Screen section called screen-name.
      By default the screens referenced by the default Layout section are
      used, or the first Screen section when there are no Layout
      sections.
- -showconfig
- This is the same as the -version option, and is included for
      compatibility reasons. It may be removed in a future release, so the
      -version option should be used instead.
- -showDefaultModulePath
- Print out the default module path the server was compiled with.
- -showDefaultLibPath
- Print out the path libraries should be installed to.
- -showopts
- For each driver module installed, print out the list of options and their
      argument types.
- -weight nnn
- Set RGB weighting at 16 bpp. The default is 565. This applies only to
      those drivers which support 16 bpp.
- -verbose [n]
- Sets the verbosity level for information printed on stderr. If the
      n value isn't supplied, each occurrence of this option increments
      the verbosity level. When the n value is supplied, the verbosity
      level is set to that value. The default verbosity level is 0.
- -version
- Print out the server version, patchlevel, release date, the operating
      system/platform it was built on, and whether it includes module loader
      support.
The Xorg server is normally configured to recognize various special
  combinations of key presses that instruct the server to perform some action,
  rather than just sending the key press event to a client application. These
  actions depend on the XKB keymap loaded by a particular keyboard device and
  may or may not be available on a given configuration.The following key combinations are commonly part of the default
    XKEYBOARD keymap.
  - Ctrl+Alt+Backspace
- Immediately kills the server -- no questions asked. It can be disabled by
      setting the DontZap xorg.conf(5) file option to a TRUE value.
It should be noted that zapping is triggered by the
  Terminate_Server action in the keyboard map. This action is not part of
  the default keymaps but can be enabled with the XKB option
  "terminate:ctrl_alt_bksp".
  - Ctrl+Alt+Keypad-Plus
- Change video mode to next one specified in the configuration file. This
      can be disabled with the DontZoom xorg.conf(5) file option.
- Ctrl+Alt+Keypad-Minus
- Change video mode to previous one specified in the configuration file.
      This can be disabled with the DontZoom xorg.conf(5) file
    option.
- Ctrl+Alt+F1...F12
- For systems with virtual terminal support, these keystroke combinations
      are used to switch to virtual terminals 1 through 12, respectively. This
      can be disabled with the DontVTSwitch xorg.conf(5) file
    option.
Xorg typically uses a configuration file called xorg.conf and
  configuration files with the suffix .conf in a directory called
  xorg.conf.d for its initial setup. Refer to the xorg.conf(5) manual
  page for information about the format of this file.Xorg has a mechanism for automatically generating a
    built-in configuration at run-time when no xorg.conf file or
    xorg.conf.d files are present. The current version of this automatic
    configuration mechanism works in two ways.
The first is via enhancements that have made many components of
    the xorg.conf file optional. This means that information that can be
    probed or reasonably deduced doesn't need to be specified explicitly,
    greatly reducing the amount of built-in configuration information that needs
    to be generated at run-time.
The second is to have "safe" fallbacks for most
    configuration information. This maximises the likelihood that the
    Xorg server will start up in some usable configuration even when
    information about the specific hardware is not available.
The automatic configuration support for Xorg is work in progress.
    It is currently aimed at the most popular hardware and software platforms
    supported by Xorg. Enhancements are planned for future releases.
The Xorg server config files can be found in a range of locations. These
  are documented fully in the xorg.conf(5) manual page. The most commonly used
  locations are shown here.
  - /etc/X11/xorg.conf
- Server configuration file.
- /etc/X11/xorg.conf-4
- Server configuration file.
- /etc/xorg.conf
- Server configuration file.
- /usr/X11R7/etc/xorg.conf
- Server configuration file.
- /usr/X11R7/lib/X11/xorg.conf
- Server configuration file.
- /etc/X11/xorg.conf.d
- Server configuration directory.
- /etc/X11/xorg.conf.d-4
- Server configuration directory.
- /etc/xorg.conf.d
- Server configuration directory.
- /usr/X11R7/etc/xorg.conf.d
- Server configuration directory.
- /usr/X11R7/lib/X11/xorg.conf.d
- Server configuration directory.
- /var/log/Xorg.n.log
- Server log file for display n.
- /usr/X11R7/bin/∗
- Client binaries.
- /usr/X11R7/include/∗
- Header files.
- /usr/X11R7/lib/∗
- Libraries.
- /usr/X11R7/lib/X11/fonts/X11/∗
- Fonts.
- /usr/X11R7/share/X11/XErrorDB
- Client error message database.
- /usr/X11R7/lib/X11/app-defaults/∗
- Client resource specifications.
- /usr/X11R7/man/man?/∗
- Manual pages.
- /etc/Xn.hosts
- Initial access control list for display n.
X(7), Xserver(1), xdm(1), xinit(1), xorg.conf(5), xvidtune(1), xkeyboard-config
  (7), apm(4), ati(4), chips(4), cirrus(4), cyrix(4), fbdev(4), glide(4),
  glint(4), i128(4), i740(4), imstt(4), intel(4), mga(4), neomagic(4), nsc(4),
  nv(4), openchrome (4), r128(4), rendition(4), s3virge(4), siliconmotion(4),
  sis(4), sunbw2(4), suncg14(4), suncg3(4), suncg6(4), sunffb(4), sunleo(4),
  suntcx(4), tdfx(4), tga(4), trident(4), tseng(4), v4l(4), vesa(4), vmware(4),
Web site <https://www.x.org>.
Xorg has many contributors world wide. The names of most of them can be found in
  the documentation, ChangeLog files in the source tree, and in the actual
  source code.
Xorg was originally based on XFree86 4.4rc2. That was originally
    based on X386 1.2 by Thomas Roell, which was contributed to the then
    X Consortium's X11R5 distribution by SGCS.
Xorg is released by the X.Org Foundation.
The project that became XFree86 was originally founded in 1992 by
    David Dawes, Glenn Lai, Jim Tsillas and David Wexelblat.
XFree86 was later integrated in the then X Consortium's X11R6
    release by a group of dedicated XFree86 developers, including the
  following:
Stuart Anderson    anderson@metrolink.com
Doug Anson         danson@lgc.com
Gertjan Akkerman   akkerman@dutiba.twi.tudelft.nl
Mike Bernson       mike@mbsun.mlb.org
Robin Cutshaw      robin@XFree86.org
David Dawes        dawes@XFree86.org
Marc Evans         marc@XFree86.org
Pascal Haible      haible@izfm.uni-stuttgart.de
Matthieu Herrb     Matthieu.Herrb@laas.fr
Dirk Hohndel       hohndel@XFree86.org
David Holland      davidh@use.com
Alan Hourihane     alanh@fairlite.demon.co.uk
Jeffrey Hsu        hsu@soda.berkeley.edu
Glenn Lai          glenn@cs.utexas.edu
Ted Lemon          mellon@ncd.com
Rich Murphey       rich@XFree86.org
Hans Nasten        nasten@everyware.se
Mark Snitily       mark@sgcs.com
Randy Terbush      randyt@cse.unl.edu
Jon Tombs          tombs@XFree86.org
Kees Verstoep      versto@cs.vu.nl
Paul Vixie         paul@vix.com
Mark Weaver        Mark_Weaver@brown.edu
David Wexelblat    dwex@XFree86.org
Philip Wheatley    Philip.Wheatley@ColumbiaSC.NCR.COM
Thomas Wolfram     wolf@prz.tu-berlin.de
Orest Zborowski    orestz@eskimo.com
 
Xorg source is available from the FTP server
    <ftp://ftp.x.org/>, and from the X.Org server
    <https://gitlab.freedesktop.org/xorg/>. Documentation and other
    information can be found from the X.Org web site
    <https://www.x.org/>.
Xorg is copyright software, provided under licenses that permit
  modification and redistribution in source and binary form without fee. Xorg
  is copyright by numerous authors and contributors from around the world.
  Licensing information can be found at <https://www.x.org>. Refer
  to the source code for specific copyright notices.
XFree86(TM) is a trademark of The XFree86 Project, Inc.
X11(TM) and X Window System(TM) are trademarks of
    The Open Group.