我刚刚在一台新电脑上安装了 16.04，当我登录时，Unity 无法正确加载。我只能看到右上角闪烁着一些弹出窗口。我可以进入 TTY，当我尝试从那里启动 Unity 时，我收到这些错误。
compizconfig - Info: Backend : gsettings
compizconfig - Info: Integration : true
compizconfig - Info: Profile : unity
WARN 2016-05-14 18:21:59 unity.glib.dbus.server GLibDBusServer.cpp:593 Can't register object 'org.gnome.Shell' yet as we don't have a connection, waiting for it...
WARN 2016-05-14 18:21:59 unity.debug.interface DebugDBusInterface.cpp:217 Unable to load entry point in libxpathselect: libxpathselect.so.1.4: cannot open shared object file: No such file or directory -- full D-Bus introspection will not be available
WARN 2016-05-14 18:21:59 unity.dash.gsettingsscopereader GSettingsScopes.cpp:108 Error fetching protocol metadata for scope: social.scope : Valid key file could not be found in search dirs
ERROR 2016-05-14 18:21:59 unityte <unknown>:0 g_object_set: assertion 'G_IS_OBJECT (object)' failed
ERROR 2016-05-14 18:21:59 unity.launcher.icon.trash TrashLauncherIcon.cpp:66 Could not create file monitor for trash uri: Operation not supported
WARN 2016-05-14 18:21:59 unity.glib.dbus.server GLibDBusServer.cpp:593 Can't register object 'com.canonical.Unity.Launcher' yet as we don't have a connection, waiting for it...
WARN 2016-05-14 18:21:59 unity.glib.dbus.server GLibDBusServer.cpp:593 Can't register object 'com.canonical.Unity.Dash' yet as we don't have a connection, waiting for it...
WARN 2016-05-14 18:21:59 unity.glib.dbus.server GLibDBusServer.cpp:593 Can't register object 'org.gnome.SessionManager.EndSessionDialog' yet as we don't have a connection, waiting for it...
WARN 2016-05-14 18:21:59 unity.glib.dbus.server GLibDBusServer.cpp:593 Can't register object 'com.canonical.Unity.Session' yet as we don't have a connection, waiting for it...
WARN 2016-05-14 18:21:59 unity.glib.dbus.server GLibDBusServer.cpp:593 Can't register object 'org.gnome.ScreenSaver' yet as we don't have a connection, waiting for it...
WARNING: no DISPLAY variable set, setting it to :0
我尝试了各种修复方法，它们告诉我重置 compiz 的配置并重新安装它，但这些方法都不起作用。此外，当我尝试 --reinstall unity 或 ubuntu-desktop 时，它告诉我无法下载它们。我该怎么办？谢谢你的帮助！