vnc远程无法显示图形界面ubuntu14.0432

按照官方linux操作指南提供的方法配置后仍然无法打开图形界面，只有命令行,如下图：

查看 /root/.vnc/iZ94vn54gpgZ:2.log 如下：
root@iZ94vn54gpgZ:~/.vnc# cat iZ94vn54gpgZ\:2.log

Xvnc Free Edition 4.1.1 - built Nov 18 2014 16:07:15
Copyright (C) 2002-2005 RealVNC Ltd.
Underlying X server release 40300000, The XFree86 Project, Inc


Fri Mar  6 10:47:20 2015
vncext:      VNC extension running!
vncext:      Listening for VNC connections on port 5902
vncext:      created VNC server for screen 0
error opening security policy file /etc/X11/xserver/SecurityPolicy
Could not init font path element /usr/X11R6/lib/X11/fonts/Speedo/, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/75dpi/, removing from list!
Could not init font path element /usr/X11R6/lib/X11/fonts/100dpi/, removing from list!
Could not init font path element /usr/share/fonts/X11/75dpi/, removing from list!
Could not init font path element /usr/share/fonts/X11/100dpi/, removing from list!
/root/.vnc/xstartup: 13: /root/.vnc/xstartup: ubuntu-desktop: not found
Option "--login" is no longer supported in this version of gnome-terminal; you might want to create a

profile with the desired setting, and use the new '--profile' option

(gnome-terminal:29388): GLib-GIO-CRITICAL **: g_settings_get: the format string may not contain '&' (key

'monospace-font-name' from schema 'org.gnome.desktop.interface'). This call will probably stop working with

a future version of glib.

Fri Mar  6 10:47:41 2015
Connections: accepted: 0.0.0.0::51808
SConnection: Client needs protocol version 3.8
SConnection: Client requests security type VncAuth(2)

Fri Mar  6 10:47:44 2015
VNCSConnST:  Server default pixel format depth 16 (16bpp) little-endian rgb565
VNCSConnST:  Client pixel format depth 8 (8bpp) colour-map

Fri Mar  6 10:47:53 2015
Connections: closed: 0.0.0.0::51808 (Clean disconnection)
SMsgWriter:  framebuffer updates 28
SMsgWriter:    raw rects 1, bytes 16396
SMsgWriter:    copyRect rects 31, bytes 496
SMsgWriter:    ZRLE rects 55, bytes 5743
SMsgWriter:    raw bytes equivalent 1003276, compression ratio 45.317133
XIO:  fatal IO error 11 (Resource temporarily unavailable) on X server ":2"
      after 643 requests (642 known processed) with 0 events remaining.

(gnome-terminal:29388): Gdk-WARNING **: gnome-terminal: Fatal IO error 11 (Resource temporarily unavailable)

on X server :2.

请问该如何解决？