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I'm rather new to Ubuntu and I'm trying to run update-manager on Ubuntu.13.10. I get:

jacopo@jacopo-laptop:~$ update-manager 
Traceback (most recent call last):
  File "/usr/bin/update-manager", line 28, in <module>
    from gi.repository import Gtk
  File "/usr/lib/python3/dist-packages/gi/", line 27, in <module> from ._gi import _API
ImportError: No module named 'gi._gi'
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/", line 64, in apport_excepthook
    from apport.fileutils import likely_packaged, get_recent_crashes
  File "/usr/lib/python3/dist-packages/apport/", line 5, in <module>
    from import Report
  File "/usr/lib/python3/dist-packages/apport/", line 30, in <module>
import apport.fileutils
  File "/usr/lib/python3/dist-packages/apport/", line 23, in <module>
    from apport.packaging_impl import impl as packaging
  File "/usr/lib/python3/dist-packages/apport/", line 20, in <module>
import apt
File "/usr/lib/python3/dist-packages/apt/", line 21, in <module>
import apt_pkg
ImportError: No module named 'apt_pkg'

Original exception was:
Traceback (most recent call last):
File "/usr/bin/update-manager", line 28, in <module>
from gi.repository import Gtk
File "/usr/lib/python3/dist-packages/gi/", line 27, in <module>
from ._gi import _API
ImportError: No module named 'gi._gi'

As far as I have understood, this is a problem related to the fact that I should have python3.4 installed. I installed it in /usr/local/ lib, but I always get the same error. In this way I can't even upgrade to Ubuntu 14.04. Could someone help me? Thanks in advance!


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If you're trying to upgrade 13.10 to 14.04, try following these instructions. If you're just trying to update your current system from the command line, open a terminal and type the following:

sudo apt-get update
sudo apt-get dist-upgrade
share|improve this answer
Thanks. I had already tried but it didn't work. I tried once more now, getting, after apt-get update, the warning W: Failed to fetch bzip2:/var/lib/apt/lists/partial/it.archive.ubuntu.com_ubuntu_dists_saucy-update‌​s_main_source_Sources Hash Sum mismatch – user291925 Jun 9 '14 at 14:22
K - you have a problem with the update sources. I've seen several threads about how to fix that The following link seems to be a good match for your question… – Charles Green Jun 9 '14 at 14:28
Thanks! I tried, but I still get the same error when running update-manager – user291925 Jun 9 '14 at 15:12
K - that about exhausts my possibilities with out a more extensive web search. Good luck! – Charles Green Jun 9 '14 at 15:22
Thanks charles! ;) – user291925 Jun 9 '14 at 15:26

I have managed to solve this by copying to /usr/lib/python3/dist-packages/ from another desktop running Ubuntu 14.04 LTS. I have tried almost all possibilities found over internet like, purging python installation and then reinstalling, cleaning broken upgrade files etc, but ended up with no success.

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