[Bug 1017711] Re: Unhandled exception during timezone selection

[Brian Murray]

*** This bug is a duplicate of bug 887879 ***
    https://bugs.launchpad.net/bugs/887879

** This bug has been marked a duplicate of bug 887879
   ubiquity crashed with ValueError in raw_decode(): No JSON object could be decoded

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https://bugs.launchpad.net/bugs/1017711

Title:
  Unhandled exception during timezone selection

Status in “ubiquity” package in Ubuntu:
  New

Bug description:
  I was attempting to install 12.04 from the amd64 LiveCD.  During the
  timezone selection, there is an unhandled ValueError if there is a
  network connection but not an internet connection.  In my case, I was
  sitting behind an AP that requires authentication via a Java applet
  (which I install from the internet (for which I need Java (which I
  install from the internet (for which ... [Curse you Cisco!])))).
  Therefore, the installer could send out a JSON request, but what it
  gets back is the authentication page, not a valid JSON document.  That
  leads to this error:

  Traceback (most recent call last):
    File "/usr/lib/ubiquity/plugins/ubi-timezone.py", line 173, in geoname_cb
      for result in json.loads(message.response_body.data):
    File "/usr/lib/python2.7/json/__init__.py", line 326, in loads
      return _default_decoder.decode(s)
    File "/usr/lib/python2.7/json/decoder.py", line 366, in deocde
      obj, end = self.raw_decode(s, idx=_w(s, 0).end())
    File "/usr/lib/python2.7/json/decoder.py", line 384, in raw_decode
      raise ValueError("No JSON object could be decoded")
    ValueError: No JSON object could be decoded

  The installer worked fine once I shut off the network connection, so I
  think the fix is easy: Put a try/except block around the loop at line
  173 of ubi-timezone.py, with "self.geoname_cache[text] = model" as an
  else clause.

  If you need the logs, let me know.  But I hope the problem is rather
  clear.

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