vncserver-x11 man page




vncserver-x11 - VNC® Server in User Mode


vncserver-x11 [OPTION...]

vncserver-x11 [MODE] [OPTION...] COMMAND


vncserver-x11 starts VNC Server in User Mode, to allow the desktop of the currently-logged on user to be remoted to VNC Viewer on another computer. When this user is logged out, VNC Server automatically stops; all VNC Viewer users are disconnected, and cannot reconnect. Note that a suitable offline license is required; see vnclicense.

Run vncserver-x11 to start VNC Server and wait for connections. A user interface consisting of a status dialog and, if supported by the window manager, a status icon is displayed, providing connectivity information and convenient access to features such as file transfer and chat. The status dialog shows information about how to connect and authenticate from VNC Viewer on another computer.

Note that an instance of vncserver-x11 is automatically started (as the root user) by VNC Server in Service Mode; see vncserver-x11-serviced.

vncserver-x11 consumes one computer 'desktop' from your subscription. See vnclicense for how to check licensing details.


Applying a command to vncserver-x11 performs an auxiliary operation instead of starting VNC Server.

To see a list of valid commands, run vncserver-x11 -help.


To apply a COMMAND to the privileged instance of vncserver-x11 started by VNC Server in Service Mode, run the command as root and specify -service.

Otherwise, commands apply automatically to VNC Server in User Mode.


Options are parameters, used to configure VNC Server, and also the following:

-iconnect HOST[::PORT]
Establishes a reverse connection to a Listening VNC Viewer on HOST at PORT (5500 by default). See vncviewer.
Starts a new instance of VNC Server, providing your subscription permits; see vnclicense. By default, running vncserver-x11 a second time interacts with the first instance.
Displays the status dialog and status icon. This may be useful to force display in some desktop environments.
-vncconfigfile FILE
For convenience, if you have many parameters to specify at the command line, populate a text file (one parameter per line; omit the dash) and reference it using this flag.

To see a list of valid parameters, run vncserver-x11 -help.

VNC configuration files

Parameters can be specified as command line OPTIONS, but preferably in VNC configuration files. VNC configuration files are available for:

  • All programs, or just VNC Server
  • All users of the computer, or just the user starting VNC Server
  • Policy, in order to lock down VNC Server

When VNC Server starts, parameters are applied in the following order:

  1. System-wide VNC configuration files
  2. Per-user VNC configuration files
  3. Command line OPTIONS
  4. Policy VNC configuration files

This means that a particular parameter specified at the command line overrides the same parameter specified in a per-user or in a system-wide VNC configuration file, but is itself overridden by the same parameter specified in a policy VNC configuration file. Policy cannot be changed by users.

Note there is a disadvantage to specifying parameters at the command line: parameters cannot be reloaded while VNC Server is running. VNC configuration files can be reloaded, however, which means that VNC Server can be reconfigured without downtime.

For a full list of available VNC configuration files, visit Configuring VNC Connect Using Parameters.


By default, vncserver-x11 logs basic activity to file at $HOME/.vnc/vncserver-x11.log.

To change the log quality, quantity, or destination, specify the LogLogDir, and LogFile parameters.

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