Kupfer froze & died

[Vadim Peretokin]

After I resume my computer from a suspend, the Kupfer window wasn't accepting any input or was unclosable via the X. Here's what the terminal had to say:

[kupfer.plugin.pidgin] ContactsSource: Loaded 147 items
Exception in thread Thread-362:
Traceback (most recent call last):
  File "/usr/lib/python2.6/threading.py", line 532, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.6/threading.py", line 484, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/share/kupfer/kupfer/core/sources.py", line 75, in rescan_source
    list(source.get_leaves(force_update=force_update))
  File "/usr/share/kupfer/kupfer/obj/base.py", line 409, in get_leaves
    self.cached_items = aslist(sort_func(self.get_items_forced()))
  File "/usr/share/kupfer/kupfer/obj/base.py", line 163, in aslist
    seq = list(seq)
  File "/usr/share/kupfer/kupfer/plugin/notes.py", line 250, in get_items
    self._update_cache(notes)
  File "/usr/share/kupfer/kupfer/plugin/notes.py", line 244, in _update_cache
    date = notes.GetNoteChangeDate(noteuri)
  File "/usr/lib/pymodules/python2.6/dbus/proxies.py", line 140, in __call__
    **keywords)
  File "/usr/lib/pymodules/python2.6/dbus/connection.py", line 620, in call_blocking
    message, timeout)
DBusException: org.freedesktop.DBus.Error.NoMemory: Not enough memory

D [kupfer.plugin.pidgin] ContactsSource: updating buddy 52417
D [kupfer.plugin.pidgin] ContactsSource: updating buddy 49500
[kupfer.plugin.nautilusselection] SelectionSource: Loaded 0 items
[kupfer.plugin.documents] PlacesSource: Loaded 10 items
[kupfer.plugin.clipboard] ClipboardSource: Loaded 10 items
[kupfer.plugin.trash] TrashSource: Loaded 1 items
D [kupfer.plugin.pidgin] ContactsSource: updating buddy 48300
[kupfer.plugin.windows] WorkspacesSource: Loaded 1 items
D [kupfer.plugin.rhythmbox] RhythmboxArtistsSource: Loaded items
[kupfer.plugin.rhythmbox] RhythmboxSource: Loaded 110 items
Segmentation fault
vadi@vadi-laptop:~$
vadi@vadi-laptop:~$

[Vadim Peretokin (vperetokin)]

It happened again, sort of - after suspend, the Kupfer window would not come up. Couldn't defiblirate it either:

vadi@vadi-laptop:~/Programs/Mudlet2/vadi-userwindows/src$ killall kupfer
vadi@vadi-laptop:~/Programs/Mudlet2/vadi-userwindows/src$ kupfer

^C
vadi@vadi-laptop:~/Programs/Mudlet2/vadi-userwindows/src$ kupfer -h
^C
vadi@vadi-laptop:~/Programs/Mudlet2/vadi-userwindows/src$

[X (u78qir8a9-deactivatedaccount)]

When this happens, we cannot recover:

DBusException: org.freedesktop.DBus.Error.NoMemory: Not enough memory

I've seen it happen here too but it's very rare. I don't know how we can make sure it's not Kupfer causing this bug (it can also be dbus or the notes application).

I'm going to mark this as incomplete -- Kupfer has no manual memory management (it's in Python) and this kind of error is far from unique to Kupfer so I think either we have a real memory low situation, or a bug in (C) libdbus or the notes application tomboy/gnote.