Traceback (most recent call last):
  File "/usr/bin/onboard-settings", line 2, in <module>
    from Onboard.settings import Settings
  File "/usr/lib/python2.6/dist-packages/Onboard/settings.py", line 7, in <module>
    from Onboard.KeyboardSVG import KeyboardSVG
  File "/usr/lib/python2.6/dist-packages/Onboard/KeyboardSVG.py", line 22, in <module>
    from Onboard.KeyboardGTK import KeyboardGTK
  File "/usr/lib/python2.6/dist-packages/Onboard/KeyboardGTK.py", line 10, in <module>
    from X11 import *
  File "/usr/lib/python2.6/dist-packages/Onboard/X11.py", line 16, in <module>
    libX11 = CDLL('libX11.so')
  File "/usr/lib/python2.6/ctypes/__init__.py", line 353, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: libX11.so: cannot open shared object file: No such file or directory