pyglet вылетает при создании окна, в чем проблема?

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берем код из доков:
import pyglet
window = pyglet.window.Window()
Вместо ожидаемого окошка получаем:

failed to create drawable
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.6/dist-packages/pyglet-1.1.4-py2.6.egg/pyglet/__init__.py", line 306, in __getattr__
    __import__(import_name)
  File "/usr/local/lib/python2.6/dist-packages/pyglet-1.1.4-py2.6.egg/pyglet/window/__init__.py", line 1684, in <module>
    gl._create_shadow_window()
  File "/usr/local/lib/python2.6/dist-packages/pyglet-1.1.4-py2.6.egg/pyglet/gl/__init__.py", line 494, in _create_shadow_window
    _shadow_window = Window(width=1, height=1, visible=False)
  File "/usr/local/lib/python2.6/dist-packages/pyglet-1.1.4-py2.6.egg/pyglet/window/xlib/__init__.py", line 474, in __init__
    super(XlibWindow, self).__init__(*args, **kwargs)
  File "/usr/local/lib/python2.6/dist-packages/pyglet-1.1.4-py2.6.egg/pyglet/window/__init__.py", line 686, in __init__
    self._create()
  File "/usr/local/lib/python2.6/dist-packages/pyglet-1.1.4-py2.6.egg/pyglet/window/xlib/__init__.py", line 683, in _create
    self.switch_to()
  File "/usr/local/lib/python2.6/dist-packages/pyglet-1.1.4-py2.6.egg/pyglet/window/xlib/__init__.py", line 781, in switch_to
    self._context.set_current()
  File "/usr/local/lib/python2.6/dist-packages/pyglet-1.1.4-py2.6.egg/pyglet/gl/__init__.py", line 345, in set_current
    self._info.set_active_context()
  File "/usr/local/lib/python2.6/dist-packages/pyglet-1.1.4-py2.6.egg/pyglet/gl/gl_info.py", line 91, in set_active_context
    self.vendor = cast(glGetString(GL_VENDOR), c_char_p).value
  File "/usr/local/lib/python2.6/dist-packages/pyglet-1.1.4-py2.6.egg/pyglet/gl/lib.py", line 105, in errcheck
    raise GLException(msg)
pyglet.gl.lib.GLException: invalid value

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