Traceback (most recent call last):
  File "/usr/bin/jockey-gtk", line 383, in on_button_toggle_clicked
    'toggle', False):
  File "/usr/lib/python2.6/dist-packages/jockey/ui.py", line 603, in set_handler_enable
    handler_id, enable)
  File "/usr/lib/python2.6/dist-packages/jockey/backend.py", line 98, in convert_dbus_exceptions
    return fn(*args, **kwargs)
  File "/usr/lib/python2.6/dist-packages/jockey/backend.py", line 90, in dbus_sync_call_signal_wrapper
    raise _h_exception_exc
DBusException: org.freedesktop.DBus.Python.OSError: Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/dbus/service.py", line 702, in _message_cb
    retval = candidate_method(self, *args, **keywords)
  File "/usr/lib/python2.6/dist-packages/jockey/backend.py", line 309, in _f_result_wrapper
    self._f_result = f()
  File "/usr/share/jockey/handlers/nvidia.py", line 86, in enable
    self._alternatives.set_alternative(nvidia_alternative)
  File "/usr/lib/python2.6/dist-packages/NvidiaDetector/alternatives.py", line 78, in set_alternative
    self.ldconfig()
  File "/usr/lib/python2.6/dist-packages/NvidiaDetector/alternatives.py", line 86, in ldconfig
    subprocess.check_call(['ldconfig'])
  File "/usr/lib/python2.6/subprocess.py", line 483, in check_call
    retcode = call(*popenargs, **kwargs)
  File "/usr/lib/python2.6/subprocess.py", line 470, in call
    return Popen(*popenargs, **kwargs).wait()
  File "/usr/lib/python2.6/subprocess.py", line 623, in __init__
    errread, errwrite)
  File "/usr/lib/python2.6/subprocess.py", line 1128, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory