[Bug 1829401] Re: gi.repository.GLib.GError: pk-client-error-quark: could not do untrusted question as no klass support

[William Wilson]

** Description changed:

  The Ubuntu Error Tracker has been receiving reports about a problem regarding software-properties.  This problem was most recently seen with package version 0.98.2, the problem page at https://errors.ubuntu.com/problem/300ff7bf9068dc50ace4c5db5c4a34ba0dfc926d contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports.
  If you do not have access to the Ubuntu Error Tracker and are a software developer, you can request it at http://forms.canonical.com/reports/.
  
  [Back trace]
  Traceback (most recent call last):
-   File "/usr/lib/python3/dist-packages/softwareproperties/gtk/DialogCacheOutdated.py", line 86, in on_pktask_finish
-     results = self._pktask.generic_finish(result)
+   File "/usr/lib/python3/dist-packages/softwareproperties/gtk/DialogCacheOutdated.py", line 86, in on_pktask_finish
+     results = self._pktask.generic_finish(result)
  gi.repository.GLib.GError: pk-client-error-quark: could not do untrusted question as no klass support (8)
  
  During handling of the above exception, another exception occurred:
  
  Traceback (most recent call last):
-   File "/usr/lib/python3/dist-packages/softwareproperties/gtk/DialogCacheOutdated.py", line 89, in on_pktask_finish
-     Gtk.ButtonsType.CANCEL, _("Error while refreshing cache"))
-   File "/usr/lib/python3/dist-packages/gi/overrides/__init__.py", line 319, in new_init
-     return super_init_func(self, **new_kwargs)
-   File "/usr/lib/python3/dist-packages/gi/overrides/Gtk.py", line 575, in __init__
-     self._init(*args, **new_kwargs)
-   File "/usr/lib/python3/dist-packages/gi/overrides/__init__.py", line 319, in new_init
-     return super_init_func(self, **new_kwargs)
-   File "/usr/lib/python3/dist-packages/gi/overrides/Gtk.py", line 521, in __init__
-     _window_init(self, *args, **kwargs)
-   File "/usr/lib/python3/dist-packages/gi/overrides/__init__.py", line 319, in new_init
-     return super_init_func(self, **new_kwargs)
+   File "/usr/lib/python3/dist-packages/softwareproperties/gtk/DialogCacheOutdated.py", line 89, in on_pktask_finish
+     Gtk.ButtonsType.CANCEL, _("Error while refreshing cache"))
+   File "/usr/lib/python3/dist-packages/gi/overrides/__init__.py", line 319, in new_init
+     return super_init_func(self, **new_kwargs)
+   File "/usr/lib/python3/dist-packages/gi/overrides/Gtk.py", line 575, in __init__
+     self._init(*args, **new_kwargs)
+   File "/usr/lib/python3/dist-packages/gi/overrides/__init__.py", line 319, in new_init
+     return super_init_func(self, **new_kwargs)
+   File "/usr/lib/python3/dist-packages/gi/overrides/Gtk.py", line 521, in __init__
+     _window_init(self, *args, **kwargs)
+   File "/usr/lib/python3/dist-packages/gi/overrides/__init__.py", line 319, in new_init
+     return super_init_func(self, **new_kwargs)
  TypeError: could not convert value for property `transient_for' from DialogCacheOutdated to GtkWindow
+ 
+ 
+ [Impact] 
+ 
+  * If selected mirrors are not reachable or have
+    expired GPG keys, software-properties-gtk
+    would crash
+ 
+ [Test Case]
+ 
+  * Edit the file /usr/share/python-apt/templates/Ubuntu.mirrors
+ 
+  * Find your locale in this file and add a non-existent URL
+    to the list
+ 
+  * Run software-properties-gtk and choose your newly added
+    URL from the "Download From" dropdown menu
+ 
+  * Press "Close" in the bottom right, and when
+    prompted press "Reload"
+ 
+  * You should be presented with an error window rather than
+    the program crashing
+ 
+ [Where problems could occur]
+ 
+  * The new error window binds to the parent window. If the
+    parent window has gotten into a bad state this could
+    cause problems

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Title:
  gi.repository.GLib.GError: pk-client-error-quark: could not do
  untrusted question as no klass support

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