Provided by: weston_3.0.0-1_amd64 bug


       weston - the reference Wayland server




       weston  is the reference implementation of a Wayland server. A Wayland server is a display
       server, a window manager, and a compositor all in one.  Weston  has  several  backends  as
       loadable modules: it can run on Linux KMS (kernel modesetting via DRM), as an X client, or
       inside another Wayland server instance.

       Weston supports fundamentally different  graphical  user  interface  paradigms  via  shell
       plugins. Two plugins are provided: the desktop shell, and the tablet shell.

       When  weston  is started as the first windowing system (i.e. not under X nor under another
       Wayland server), it should be done  with  the  command  weston-launch  to  set  up  proper
       privileged access to devices.

       Weston also supports X clients via XWayland, see below.

              The DRM backend uses Linux KMS for output and evdev devices for input.  It supports
              multiple monitors in a unified desktop with DPMS. See weston-drm(7), if installed.
              The Wayland backend runs on another Wayland server, a  different  Weston  instance,
              for example. Weston shows up as a single desktop window on the parent server.
              The  X11  backend runs on an X server. Each Weston output becomes an X window. This
              is a cheap way to test multi-monitor  support  of  a  Wayland  shell,  desktop,  or


       Each  of these shells have its own public protocol interface for clients.  This means that
       a client must be specifically written for a shell protocol, otherwise it will not work.

       Desktop shell
              Desktop shell is like a modern X desktop environment, concentrating on  traditional
              keyboard and mouse user interfaces and the familiar desktop-like window management.
              Desktop shell consists of the shell plugin and the special  client
              weston-desktop-shell  which  provides  the  wallpaper,  panel,  and  screen locking

       Fullscreen shell
              Fullscreen shell is intended for a client that needs to take  over  whole  outputs,
              often  all  outputs.  This  is primarily intended for running another compositor on
              Weston. The other compositor does not need to handle  any  platform-specifics  like
              DRM/KMS or evdev/libinput.  The shell consists only of the shell plugin fullscreen-

              In-vehicle infotainment shell is a special purpose  shell  that  exposes  a  GENIVI
              Layer  Manager  compatible  API  to  controller  modules,  and  a very simple shell
              protocol towards clients. IVI-shell starts with loading,  and  then  a
              controller module which may launch helper clients.


       XWayland  requires a special server to be installed. This X server will connect to a
       Wayland server as a Wayland client, and X clients will connect to the X  server.  XWayland
       provides backwards compatibility to X applications in a Wayland stack.

       XWayland  is  activated  by  instructing weston to load the XWayland module, see EXAMPLES.
       Weston starts listening on a new X display socket,  and  exports  it  in  the  environment
       variable DISPLAY.  When the first X client connects, Weston launches a special X server as
       a Wayland client to handle the X client and all future X clients.

       It has also its own X window manager where cursor themes and sizes  can  be  chosen  using
       XCURSOR_PATH and XCURSOR_SIZE environment variables. See ENVIRONMENT.


   Weston core options:,
              Load  instead  of  the  default  backend.  The  file is searched for in
              /usr/lib/x86_64-linux-gnu/weston, or you can pass an  absolute  path.  The  default
              backend  is  unless the environment suggests otherwise, see DISPLAY
              and WAYLAND_DISPLAY.

       -cconfig.ini, --config=config.ini
              Load config.ini instead of weston.ini.  The argument can also be an  absolute  path
              starting  with a /.  If the path is not absolute, it will be searched in the normal
              config paths, see weston.ini(5).  If also --no-config is  given,  no  configuration
              file will be read.

              Print the program version.

       -h, --help
              Print a summary of command line options, and quit.

       -iN, --idle-time=N
              Set  the  idle timeout to N seconds. The default timeout is 300 seconds. When there
              has not been any user input for the idle timeout, Weston enters an  inactive  mode.
              The  screen  fades  to  black,  monitors may switch off, and the shell may lock the
              session.  A value of 0 effectively disables the timeout.

              Append log messages to the file file.log instead of writing them to stderr.

              Ask Weston to load the XWayland module.,
              Load the comma-separated list of modules. Only used by the test suite. The file  is
              searched for in /usr/lib/x86_64-linux-gnu/weston, or you can pass an absolute path.

              Do  not  read weston.ini for the compositor. Avoids e.g. loading compositor modules
              via the configuration file, which is useful for unit tests.

       -Sname, --socket=name
              Weston will  listen  in  the  Wayland  socket  called  name.   Weston  will  export
              WAYLAND_DISPLAY with this value in the environment for all child processes to allow
              them to connect to the right server automatically.

   DRM backend options:
       See weston-drm(7).

   Wayland backend options:
              Name of the Wayland  display  to  connect  to,  see  also  WAYLAND_DISPLAY  of  the

              Create a single fullscreen output

              Create N Wayland windows to emulate the same number of outputs.

       --width=W, --height=H
              Make all outputs have a size of WxH pixels.

              Give all outputs a scale factor of N.

              Use  the  pixman  renderer.   By  default, weston will try to use EGL and GLES2 for
              rendering and will fall back to the pixman-based renderer for software  compositing
              if  EGL  cannot  be  used.  Passing this option will force weston to use the pixman

   X11 backend options:

              Do not provide any input devices. Used for testing input-less Weston.

              Create N X windows to emulate the same number of outputs.

       --width=W, --height=H
              Make the default size of each X window WxH pixels.

              Give all outputs a scale factor of N.

              Use the pixman renderer.  By default weston will try  to  use  EGL  and  GLES2  for
              rendering.   Passing  this  option  will  make  weston  use  the pixman library for
              software compsiting.


       If the environment variable is set, the configuration file is  read  from  the  respective
       path, or the current directory if neither is set.



              The  X  display.  If  DISPLAY  is  set, and WAYLAND_DISPLAY is not set, the default
              backend becomes

              If set to any value, causes libwayland to print the live protocol to stderr.

              The name of the display (socket) of an already running Wayland server, without  the
              path.  The directory path is always taken from XDG_RUNTIME_DIR.  If WAYLAND_DISPLAY
              is not set, the socket name is "wayland-0".

              If WAYLAND_DISPLAY is already set, the default backend becomes
              This allows launching Weston as a nested server.

              For Wayland clients, holds the file descriptor of an open local socket to a Wayland

              Weston sets this variable to the absolute path of the configuration file it  loads,
              or  to  the empty string if no file is used. Programs that use weston.ini will read
              the file specified by this variable instead, or do not  read  any  file  if  it  is
              empty. Unset variable causes falling back to the default name weston.ini.

              Set the list of paths to look for cursors in. It changes both libwayland-cursor and
              libXcursor, so it affects both Wayland and X11 based clients. See xcursor (3).

              This variable can be set for choosing an specific size of  cursor.  Affect  Wayland
              and X11 clients. See xcursor (3).

              If set, specifies the directory where to look for weston.ini.

              The   directory   for  Weston's  socket  and  lock  files.   Wayland  clients  will
              automatically use this.


       Weston has a segmentation fault handler, that attempts to restore the virtual  console  or
       ungrab X before raising SIGTRAP.  If you run weston under gdb(1) from an X11 terminal or a
       different virtual terminal, and tell gdb

              handle SIGSEGV nostop

       This will allow weston to switch back to gdb on crash and then gdb will  catch  the  crash
       with SIGTRAP.


       Bugs  should  be  reported to the bugzilla at
       with product "Wayland" and component "weston".



       Launch Weston with the DRM backend on a VT

       Launch Weston with the DRM backend and XWayland support
              weston-launch -- --xwayland

       Launch Weston (wayland-1) nested in another Weston instance (wayland-0)
              WAYLAND_DISPLAY=wayland-0 weston -Swayland-1

       From an X terminal, launch Weston with the x11 backend