Question

how do you connect using tighVNC?

Posted August 9, 2020 266 views
Ubuntu 20.04

how do you connect using tighVNC? Followed the isntructions but when trying to connect using tightvnc from windows 10 the connection times out.

Tight VNC instructions are not given, just putty and ssh through cli.
Please can you point me in direction to documentation that helps connect via tightVNC?
i am connecting using
<server_ip>:5901

1 comment
  • when checking out the logs there are lots of issues....

    GNU nano 4.8 /home/gav/.vnc/webautomation:1.log
    (xfwm4:1546): xfwm4-WARNING **: 14:06:19.959: The display does not support the XDamage extension.

    (xfwm4:1546): xfwm4-WARNING **: 14:06:19.959: The display does not support the XFixes extension.

    (xfwm4:1546): xfwm4-WARNING **: 14:06:19.960: The display does not support the XPresent extension.

    (xfwm4:1546): xfwm4-WARNING **: 14:06:19.960: Compositing manager disabled.
    xfwm4-Message: 14:06:20.055: Unsupported keyboard modifier ’<Super>Tab’

    (xfwm4:1546): xfwm4-WARNING **: 14:06:20.062: Cannot find visual format on screen 0

    (xfsettingsd:1556): xfsettingsd-CRITICAL **: 14:06:20.135: No RANDR extension found in display :1. Display settings won’t be applied.
    Xlib: extension “XInputExtension” missing on display “:1”.

    (xfsettingsd:1556): xfsettingsd-CRITICAL **: 14:06:20.136: XI is not present.

    (xfsettingsd:1556): xfsettingsd-CRITICAL **: 14:06:20.136: Failed to initialize the Xkb extension.

    (xfsettingsd:1556): xfsettingsd-CRITICAL **: 14:06:20.136: Failed to initialize the Accessibility extension.
    xfwm4-Message: 14:06:20.409: Unsupported keyboard modifier ’<Super>Tab’

    ** (wrapper-2.0:1573): WARNING **: 14:06:21.337: No XRANDR extension found

    (wrapper-2.0:1574): GLib-GIO-CRITICAL **: 14:06:21.374: gfilenewforpath: assertion ‘path != NULL’ failed

    (wrapper-2.0:1574): GLib-GIO-CRITICAL **: 14:06:21.374: gfilemonitorfile: assertion 'GIS_FILE (file)’ failed

    (wrapper-2.0:1574): GLib-GObject-WARNING **: 14:06:21.374: invalid (NULL) pointer instance

    (wrapper-2.0:1574): GLib-GObject-CRITICAL **: 14:06:21.374: gsignalconnectdata: assertion 'GTYPECHECKINSTANCE (instance)’ failed

    (wrapper-2.0:1574): Gtk-WARNING **: 14:06:21.374: Attempting to add a widget with type GtkToggleButton to a container of type XfcePanelPlugin, but the widget is already inside a container of type XfcePanelPlugin, please remove the widge>

    ** (wrapper-2.0:1572): WARNING **: 14:06:21.382: Binding 'XF86AudioLowerVolume’ failed!

    (wrapper-2.0:1572): pulseaudio-plugin-WARNING **: 14:06:21.382: Could not have grabbed volume control keys. Is another volume control application (xfce4-volumed) running?

    ** (wrapper-2.0:1572): WARNING **: 14:06:21.382: Binding 'XF86AudioPlay’ failed!

    (wrapper-2.0:1572): pulseaudio-plugin-WARNING **: 14:06:21.382: Could not have grabbed multimedia control keys.

    (wrapper-2.0:1574): Gtk-WARNING **: 14:06:21.541: Negative content width -3 (allocation 1, extents 2x2) while allocating gadget (node button, owner GtkToggleButton)

    ** (xiccd:1590): CRITICAL **: 14:06:21.625: RandR extension is not working on display :1.0
    AUDIT: Sun Aug 9 14:06:21 2020: 1504 Xtightvnc: client 14 rejected from local host
    Failure: Module initialization failed

    (wrapper-2.0:1573): Gtk-WARNING **: 14:06:21.861: Negative content width -3 (allocation 1, extents 2x2) while allocating gadget (node button, owner PowerManagerButton)

    ** (light-locker:1613): ERROR **: 14:06:22.441: Environment variable XDGSESSIONPATH not set. Is LightDM running?

    (nm-applet:1631): Gtk-WARNING **: 14:06:23.115: Can’t set a parent on widget which has a parent

    (nm-applet:1631): Gdk-CRITICAL **: 14:06:23.382: gdkwindowthawtoplevelupdates: assertion 'window->updateanddescendantsfreezecount > 0’ failed

    (wrapper-2.0:1572): libnotify-WARNING **: 14:06:46.451: Failed to connect to proxy

    (wrapper-2.0:1572): Gtk-WARNING **: 14:06:46.469: Negative content width -3 (allocation 1, extents 2x2) while allocating gadget (node button, owner PulseaudioButton)

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1 answer

Hi, @marriog

Have you tried using another client different from tightvnc? You can use RealVNC, VNC Viewer or Remmina as well.

If you’re still getting a blank page you can do the following. Add the following snippet to the xstartup which is mentioned in step 1 - /home/sammy/.vnc/xstartup and try again.

#!/bin/sh
 unset SESSION_MANAGER
 unset DBUS_SESSION_BUS_ADDRESS
 dbus-launch xfce4-session

Hope that this helps!
Regards,
Alex

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