Comment 2 for bug 138935

I'm seeing the same problem. I can connect successfully using xtightvncviewer 1.2.9-21, but not with xvncviewer 3.3.7-13ubuntu2

VNC viewer version 3.3.7 - built Mar 8 2007 21:56:52
Copyright (C) 2002-2003 RealVNC Ltd.
Copyright (C) 1994-2000 AT&T Laboratories Cambridge.
See http://www.realvnc.com for information on VNC.
VNC server supports protocol version 3.889 (viewer 3.3)
Password:
VNC authentication succeeded
Desktop name "DHP.local"
Connected to VNC server, using protocol version 3.3
VNC server default format:
  32 bits per pixel.
  Most significant byte first in each pixel.
  True colour: max red 255 green 255 blue 255, shift red 16 green 8 blue 0
Using default colormap and visual, TrueColor, depth 24.
Got 256 exact BGR233 colours out of 256
Using BGR233 pixel format:
  8 bits per pixel.
  True colour: max red 7 green 7 blue 3, shift red 0 green 3 blue 6
Using shared memory PutImage
Throughput 9768 kbit/s - changing from 8bit
Using viewer's native pixel format:
  32 bits per pixel.
  Least significant byte first in each pixel.
  True colour: max red 255 green 255 blue 255, shift red 16 green 8 blue 0
Unknown message type 255 from VNC server
ShmCleanup called