Ubuntu зависает при разблокировке экрана

Со времени моей последней перезагрузки (и я предполагаю, что с момента моего последнего обновления ядра), Ubuntu зависает после того, как я возвращаюсь с заблокированного экрана. Я использую Ubuntu 17.04 с 4.10.0-32-generic и Radeon RX 480 (без драйвера Radeon). Журналы содержат сначала

Aug 25 16:35:31 reichelt-desktop gnome-session[2506]: gnome-session-binary[2506]: GLib-GIO-CRITICAL: g_dbus_connection_call_internal: assertion 'object_path != NULL && g_variant_is_object_path (object_path)' failed
Aug 25 16:35:31 reichelt-desktop gnome-session-binary[2506]: GLib-GIO-CRITICAL: g_dbus_connection_call_internal: assertion 'object_path != NULL && g_variant_is_object_path (object_path)' failed

, затем многие из них не смогли отправить сообщение, например

Aug 25 16:40:43 reichelt-desktop kernel: [22191.381820]  failed to send pre message 146 ret is 0 
Aug 25 16:40:44 reichelt-desktop kernel: [22191.799677]
Aug 25 16:40:44 reichelt-desktop kernel: [22191.799677]  failed to send message 146 ret is 0 
Aug 25 16:40:44 reichelt-desktop kernel: [22192.209455]
Aug 25 16:40:44 reichelt-desktop kernel: [22192.209455]  failed to send pre message 5d ret is 0 
Aug 25 16:40:44 reichelt-desktop kernel: [22192.619189]
Aug 25 16:40:44 reichelt-desktop kernel: [22192.619189]  failed to send message 5d ret is 0 
Aug 25 16:40:45 reichelt-desktop kernel: [22193.029952]
Aug 25 16:40:45 reichelt-desktop kernel: [22193.029952]  failed to send pre message 148 ret is 0 
Aug 25 16:40:45 reichelt-desktop kernel: [22193.440793]
Aug 25 16:40:45 reichelt-desktop kernel: [22193.440793]  failed to send message 148 ret is 0 

, а затем, наконец, то, что кажется реконструкцией некоторого пользовательского интерфейса:

Aug 25 16:40:46 reichelt-desktop kernel: [22194.262002]
Aug 25 16:40:46 reichelt-desktop kernel: [22194.262002]  failed to send pre message 145 ret is 0 
Aug 25 16:40:46 reichelt-desktop kernel: [22194.672385]
Aug 25 16:40:46 reichelt-desktop kernel: [22194.672385]  failed to send message 145 ret is 0 
Aug 25 16:40:47 reichelt-desktop kernel: [22195.493820]
Aug 25 16:40:47 reichelt-desktop kernel: [22195.493820]  failed to send pre message 146 ret is 0 
Aug 25 16:40:48 reichelt-desktop kernel: [22195.904314]
Aug 25 16:40:48 reichelt-desktop kernel: [22195.904314]  failed to send message 146 ret is 0 
Aug 25 16:40:48 reichelt-desktop unity-settings-[2480]: failed to turn the kbd backlight off: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Keine derartige Schnittstelle »org.freedesktop.UPower.KbdBacklight« des Objekts im Pfad /org/freedesktop/UPower/KbdBacklight
Aug 25 16:40:49 reichelt-desktop avahi-daemon[977]: Registering new address record for 2a02:810a:12c0:4e6c:cdd3:ea94:b14e:271e on enp2s0.*.
Aug 25 16:40:49 reichelt-desktop avahi-daemon[977]: Withdrawing address record for 2a02:810a:12c0:4e6c:cdd3:ea94:b14e:271e on enp2s0.
Aug 25 16:40:50 reichelt-desktop gnome-session[2506]: gnome-session-binary[2506]: GLib-GIO-CRITICAL: g_dbus_connection_call_internal: assertion 'object_path != NULL && g_variant_is_object_path (object_path)' failed
Aug 25 16:40:50 reichelt-desktop gnome-session-binary[2506]: GLib-GIO-CRITICAL: g_dbus_connection_call_internal: assertion 'object_path != NULL && g_variant_is_object_path (object_path)' failed
Aug 25 16:40:50 reichelt-desktop unity-panel-ser[2771]: menus_destroyed: assertion 'IS_WINDOW_MENU(wm)' failed
Aug 25 16:40:50 reichelt-desktop systemd[2163]: Starting Backing Service for the Unity Panel in Lockscreen mode...
Aug 25 16:40:50 reichelt-desktop compiz[2749]: WARN  2017-08-25 16:40:50 unity.glib.dbus.proxy GLibDBusProxy.cpp:487 Calling method "EmitEvent" on object path: "/com/ubuntu/Upstart" failed: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name com.canonical.Unity.Test.Upstart was not provided by any .service files
Aug 25 16:40:50 reichelt-desktop systemd[2163]: Started Backing Service for the Unity Panel in Lockscreen mode.
Aug 25 16:40:50 reichelt-desktop systemd[2163]: Reached target A target that, when running, represents the screen being locked.
Aug 25 16:40:51 reichelt-desktop compiz[2749]: Warning: Fehler beim Lesen von Daten für Kalender: Privat2. Fehlercode: READ_FAILED. Beschreibung:
Aug 25 16:40:58 reichelt-desktop compiz: pam_ecryptfs: seteuid error
Aug 25 16:40:59 reichelt-desktop unity-panel-ser[2771]: menus_destroyed: assertion 'IS_WINDOW_MENU(wm)' failed
Aug 25 16:40:59 reichelt-desktop unity-panel-ser[2771]: menus_destroyed: assertion 'IS_WINDOW_MENU(wm)' failed
Aug 25 16:40:59 reichelt-desktop systemd[2163]: Stopped target A target that, when running, represents the screen being locked.
Aug 25 16:40:59 reichelt-desktop systemd[2163]: Stopping Backing Service for the Unity Panel in Lockscreen mode...
Aug 25 16:40:59 reichelt-desktop compiz[2749]: WARN  2017-08-25 16:40:59 unity.glib.dbus.proxy GLibDBusProxy.cpp:487 Calling method "EmitEvent" on object path: "/com/ubuntu/Upstart" failed: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name com.canonical.Unity.Test.Upstart was not provided by any .service files

Похоже, похожая ошибка произошла в . Как уменьшить задержку перед блокировкой после нажатия кнопки блокировки? , но там все было наоборот: задержка появляется при регистрации, а не при разблокировке.

Это действительно занимает много времени, если мне нужно подождать 5 минут, прежде чем я смогу разблокировать экран. Это происходит с кем-то еще? Есть ли обходной путь для этого?