vnc not into gnome but Xfce but still not working

[Robert Moskowitz]

OK.  I believe I figured out what is wrongish.

I normally run gnome, so in my ~/.vnc/xstartup I have:

exec gnome-session &

as the last line.  But this fedora 20 arm system is running Xfce! So 
after a quick google search, I changed that to:

exec xfce4-session &

But still I get vnc having a blank screen.  That no desktop is running 
in vnc.  /var/log/messages says:

Jul 23 01:38:55 cb2 runuser: New 'cb2.htt-consult.com:3 (rgm)' desktop 
is cb2.htt-consult.com:3
Jul 23 01:38:55 cb2 runuser: Starting applications specified in 
/home/rgm/.vnc/xstartup
Jul 23 01:38:55 cb2 runuser: Log file is 
/home/rgm/.vnc/cb2.htt-consult.com:3.log
Jul 23 01:38:55 cb2 systemd: Started Remote desktop service (VNC).


/home/rgm/.vnc/cb2.htt-consult.com:3.log says:

Xvnc TigerVNC 1.3.0 - built Mar 19 2014 17:22:24
Copyright (C) 1999-2011 TigerVNC Team and many others (see README.txt)
See http://www.tigervnc.org for information on TigerVNC.
Underlying X server release 11404000, The X.Org Foundation

Initializing built-in extension VNC-EXTENSION
Initializing built-in extension Generic Event Extension
Initializing built-in extension SHAPE
Initializing built-in extension MIT-SHM
Initializing built-in extension XInputExtension
Initializing built-in extension XTEST
Initializing built-in extension BIG-REQUESTS
Initializing built-in extension SYNC
Initializing built-in extension XKEYBOARD
Initializing built-in extension XC-MISC
Initializing built-in extension XFIXES
Initializing built-in extension RENDER
Initializing built-in extension RANDR
Initializing built-in extension COMPOSITE
Initializing built-in extension DAMAGE
Initializing built-in extension MIT-SCREEN-SAVER
Initializing built-in extension DOUBLE-BUFFER
Initializing built-in extension RECORD
Initializing built-in extension DPMS
Initializing built-in extension X-Resource
Initializing built-in extension XVideo
Initializing built-in extension XVideo-MotionCompensation
Initializing built-in extension GLX

Wed Jul 23 01:38:52 2014
  vncext:      VNC extension running!
  vncext:      Listening for VNC connections on all interface(s), port 5903
  vncext:      created VNC server for screen 0

Wed Jul 23 01:39:05 2014
  Connections: accepted: 169.254.7.250::43934
  SConnection: Client needs protocol version 3.8
  SConnection: Client requests security type VncAuth(2)

Wed Jul 23 01:39:08 2014
  VNCSConnST:  Server default pixel format depth 24 (32bpp) 
little-endian rgb888
  VNCSConnST:  Client pixel format depth 24 (32bpp) little-endian rgb888

Wed Jul 23 01:39:32 2014
  Connections: closed: 169.254.7.250::43934 (Clean disconnection)
  SMsgWriter:  framebuffer updates 6
  SMsgWriter:    Tight rects 17, bytes 1855
  SMsgWriter:    raw bytes equivalent 5849792, compression ratio 3153.526685