我无法在系统设置中打开软件和更新配置窗口。在从终端打开系统设置并单击软件和更新后，我能够做的最好的事情是以下输出：
$ sudo unity-control-center
/usr/lib/python3/dist-packages/softwareproperties/gtk/SoftwarePropertiesGtk.py:40: PyGIWarning: Gdk was imported without specifying a version first. Use gi.require_version('Gdk', '3.0') before import to ensure that the right version gets loaded.
from gi.repository import GObject, Gdk, Gtk, Gio, GLib
/usr/lib/python3/dist-packages/softwareproperties/gtk/SoftwarePropertiesGtk.py:40: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
from gi.repository import GObject, Gdk, Gtk, Gio, GLib
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/dbus/bus.py", line 175, in activate_name_owner
return self.get_name_owner(bus_name)
File …