Xubuntu 16.04の完全にパッチが適用されたマシンは、新たに作成されたユーザーで、ライトロッカーを使用して画面をロックした後、ロックを手動でまたはタイムアウトを介してアクティブにした場合にロックを解除できません。 画面は黒のまま(ただし電源が入っている)正しいパスワード入力
Tty1からlight-lockerを殺すと、デスクトップが表示されます(その結果、それ以上ロックされなくなります)。
試行されたステップ:
This session is locked: You will be redirected to the unlock dialog automatically in a few seconds
メッセージが表示されます-リダイレクトは行われませんloginctl unlock-session
を使用しても効果はありませんsystemctl status lightdm
は、欠落しているkwallet pamモジュールに関する(無害、予想される)メッセージのみを表示しますnopasswdlogin
グループにユーザーを追加しました(パスワードを入力した後だけでなく、ロック直後に黒い画面が表示されます)これを修正する方法を見つけるのに役立つ追加のステップは何ですか?
デバッグログ:
$ export LC_ALL=C; light-locker --debug & ( sleep 5; echo "## Locking now"; light-locker-command --lock; sleep 10; echo "### 10 seconds have passed - entering password now"; sleep 10; echo "### 10 more seconds have passwd - Killing"; killall light-locker; sleep 5; echo "### Killed now" )
[1] 23463
[gs_debug_init] gs-debug.c:106 (00:08:32): Debugging enabled
[main] light-locker.c:142 (00:08:32): initializing light-locker 1.7.0
[main] light-locker.c:144 (00:08:32): lock after screensaver 10
[main] light-locker.c:145 (00:08:32): late locking 0
[main] light-locker.c:146 (00:08:32): lock on suspend 1
[main] light-locker.c:147 (00:08:32): lock on lid 0
[main] light-locker.c:148 (00:08:32): idle hint 1
[query_session_id] gs-listener-dbus.c:2088 (00:08:32): org.freedesktop.login1.NoSessionForPID raised:
PID 23463 does not belong to any known session
[init_session_id] gs-listener-dbus.c:2180 (00:08:32): Got session-id: (null)
[query_sd_session_id] gs-listener-dbus.c:2164 (00:08:32): Couldn't determine our own sd session id: No such process
[init_session_id] gs-listener-dbus.c:2185 (00:08:32): Got sd-session-id: (null)
[init_seat_path] gs-listener-dbus.c:2262 (00:08:32): Got seat: /org/freedesktop/DisplayManager/Seat0
[gs_listener_delay_suspend] gs-listener-dbus.c:449 (00:08:32): Delay suspend
[gs_listener_x11_acquire] gs-listener-x11.c:172 (00:08:32): ScreenSaver Registered
[listener_dbus_handle_system_message] gs-listener-dbus.c:1330 (00:08:32): obj_path=/org/freedesktop/DBus interface=org.freedesktop.DBus method=NameAcquired destination=:1.316
## Locking now
[gs_grab_grab_root] gs-grab-x11.c:647 (00:08:37): Grabbing the root window
[gs_grab_get_keyboard] gs-grab-x11.c:153 (00:08:37): Grabbing keyboard widget=E3
[gs_grab_get_mouse] gs-grab-x11.c:213 (00:08:37): Grabbing mouse widget=E3
[gs_manager_create_windows_for_screen] gs-manager.c:548 (00:08:37): Creating 1 windows for screen 0
[gs_manager_create_window_for_monitor] gs-manager.c:324 (00:08:37): Creating window for monitor 0 [0,0] (1600x900)
[update_geometry] gs-window-x11.c:197 (00:08:37): got geometry for monitor 0: x=0 y=0 w=1600 h=900
[update_geometry] gs-window-x11.c:210 (00:08:37): using geometry for monitor 0: x=0 y=0 w=1600 h=900
[update_geometry] gs-window-x11.c:197 (00:08:37): got geometry for monitor 0: x=0 y=0 w=1600 h=900
[update_geometry] gs-window-x11.c:210 (00:08:37): using geometry for monitor 0: x=0 y=0 w=1600 h=900
[gs_window_move_resize_window] gs-window-x11.c:243 (00:08:37): Move and/or resize window on monitor 0: x=0 y=0 w=1600 h=900
[update_geometry] gs-window-x11.c:197 (00:08:37): got geometry for monitor 0: x=0 y=0 w=1600 h=900
[update_geometry] gs-window-x11.c:210 (00:08:37): using geometry for monitor 0: x=0 y=0 w=1600 h=900
[gs_window_move_resize_window] gs-window-x11.c:243 (00:08:37): Move and/or resize window on monitor 0: x=0 y=0 w=1600 h=900
[update_geometry] gs-window-x11.c:197 (00:08:37): got geometry for monitor 0: x=0 y=0 w=1600 h=900
[update_geometry] gs-window-x11.c:210 (00:08:37): using geometry for monitor 0: x=0 y=0 w=1600 h=900
[gs_window_move_resize_window] gs-window-x11.c:243 (00:08:37): Move and/or resize window on monitor 0: x=0 y=0 w=1600 h=900
[gs_manager_timed_switch] gs-manager.c:445 (00:08:37): Start switch to greeter timer
[gs_window_xevent] gs-window-x11.c:369 (00:08:37): not raising our windows
[window_map_event_cb] gs-manager.c:233 (00:08:37): Handling window map_event event
[gs_listener_resume_suspend] gs-listener-dbus.c:513 (00:08:37): Resume suspend: fd=14
[manager_maybe_grab_window] gs-manager.c:204 (00:08:37): Moving grab to 0x5595f8d5a290
[gs_grab_move_keyboard] gs-grab-x11.c:450 (00:08:37): Moving keyboard grab from E3 to 3A0000C
[gs_grab_move_keyboard] gs-grab-x11.c:457 (00:08:37): *** doing X server grab
[gs_grab_release_keyboard] gs-grab-x11.c:279 (00:08:37): Ungrabbing keyboard
[gs_grab_get_keyboard] gs-grab-x11.c:153 (00:08:37): Grabbing keyboard widget=3A0000C
[gs_grab_move_keyboard] gs-grab-x11.c:479 (00:08:37): *** releasing X server grab
[gs_grab_move_mouse] gs-grab-x11.c:395 (00:08:37): Moving pointer grab from E3 to 3A0000C
[gs_grab_move_mouse] gs-grab-x11.c:402 (00:08:37): *** doing X server grab
[gs_grab_release_mouse] gs-grab-x11.c:320 (00:08:37): Ungrabbing pointer
[gs_grab_get_mouse] gs-grab-x11.c:213 (00:08:37): Grabbing mouse widget=3A0000C
[gs_grab_move_mouse] gs-grab-x11.c:425 (00:08:37): *** releasing X server grab
[listener_dbus_handle_system_message] gs-listener-dbus.c:1330 (00:08:37): obj_path=/org/freedesktop/login1 interface=org.freedesktop.DBus.Properties method=PropertiesChanged destination=(null)
[update_geometry] gs-window-x11.c:197 (00:08:37): got geometry for monitor 0: x=0 y=0 w=1600 h=900
[update_geometry] gs-window-x11.c:210 (00:08:37): using geometry for monitor 0: x=0 y=0 w=1600 h=900
[gs_window_move_resize_window] gs-window-x11.c:243 (00:08:37): Move and/or resize window on monitor 0: x=0 y=0 w=1600 h=900
[update_geometry] gs-window-x11.c:197 (00:08:37): got geometry for monitor 0: x=0 y=0 w=1600 h=900
[update_geometry] gs-window-x11.c:210 (00:08:37): using geometry for monitor 0: x=0 y=0 w=1600 h=900
[gs_window_move_resize_window] gs-window-x11.c:243 (00:08:37): Move and/or resize window on monitor 0: x=0 y=0 w=1600 h=900
[gs_listener_send_lock_session] gs-listener-dbus.c:180 (00:08:38): Send lock session
[listener_dbus_handle_system_message] gs-listener-dbus.c:1330 (00:08:38): obj_path=(null) interface=(null) method=(null) destination=:1.316
[listener_dbus_handle_system_message] gs-listener-dbus.c:1330 (00:08:39): obj_path=/org/freedesktop/login1/session/c5 interface=org.freedesktop.DBus.Properties method=PropertiesChanged destination=(null)
[listener_dbus_handle_system_message] gs-listener-dbus.c:1330 (00:08:39): obj_path=/org/freedesktop/login1/session/c12 interface=org.freedesktop.DBus.Properties method=PropertiesChanged destination=(null)
[listener_dbus_handle_system_message] gs-listener-dbus.c:1330 (00:08:39): obj_path=/org/freedesktop/login1/seat/seat0 interface=org.freedesktop.DBus.Properties method=PropertiesChanged destination=(null)
process 23463: arguments to dbus_message_new_method_call() were incorrect, assertion "path != NULL" failed in file ../../dbus/dbus-message.c line 1340.
This is normally a bug in some application using the D-Bus library.
[query_session_active] gs-listener-dbus.c:1124 (00:08:39): Couldn't allocate the dbus message
[listener_dbus_handle_system_message] gs-listener-dbus.c:1361 (00:08:39): systemd notified ActiveSession 0
[listener_session_switched_cb] gs-monitor.c:298 (00:08:39): Session switched: 0
[gs_manager_stop_switch] gs-manager.c:456 (00:08:39): Stop switch to greeter timer
[listener_dbus_handle_system_message] gs-listener-dbus.c:1330 (00:08:39): obj_path=/org/freedesktop/login1/seat/seat0 interface=org.freedesktop.DBus.Properties method=PropertiesChanged destination=(null)
[listener_dbus_handle_system_message] gs-listener-dbus.c:1330 (00:08:39): obj_path=/org/freedesktop/login1/session/c12 interface=org.freedesktop.DBus.Properties method=PropertiesChanged destination=(null)
[listener_dbus_handle_system_message] gs-listener-dbus.c:1330 (00:08:39): obj_path=/org/freedesktop/login1/user/_108 interface=org.freedesktop.DBus.Properties method=PropertiesChanged destination=(null)
[listener_dbus_handle_system_message] gs-listener-dbus.c:1330 (00:08:39): obj_path=/org/freedesktop/login1/seat/seat0 interface=org.freedesktop.DBus.Properties method=PropertiesChanged destination=(null)
process 23463: arguments to dbus_message_new_method_call() were incorrect, assertion "path != NULL" failed in file ../../dbus/dbus-message.c line 1340.
This is normally a bug in some application using the D-Bus library.
[query_session_active] gs-listener-dbus.c:1124 (00:08:39): Couldn't allocate the dbus message
[listener_dbus_handle_system_message] gs-listener-dbus.c:1361 (00:08:39): systemd notified ActiveSession 0
[listener_session_switched_cb] gs-monitor.c:298 (00:08:39): Session switched: 0
[listener_dbus_handle_system_message] gs-listener-dbus.c:1330 (00:08:39): obj_path=/org/freedesktop/login1/session/c5 interface=org.freedesktop.login1.Session method=Lock destination=(null)
### 10 seconds have passed - entering password now
[listener_dbus_handle_system_message] gs-listener-dbus.c:1330 (00:08:51): obj_path=/org/freedesktop/login1/session/c5 interface=org.freedesktop.login1.Session method=Unlock destination=(null)
[listener_dbus_handle_system_message] gs-listener-dbus.c:1330 (00:08:51): obj_path=/org/freedesktop/login1/session/c13 interface=org.freedesktop.DBus.Properties method=PropertiesChanged destination=(null)
[listener_dbus_handle_system_message] gs-listener-dbus.c:1330 (00:08:51): obj_path=/org/freedesktop/login1/session/c5 interface=org.freedesktop.DBus.Properties method=PropertiesChanged destination=(null)
[listener_dbus_handle_system_message] gs-listener-dbus.c:1330 (00:08:51): obj_path=/org/freedesktop/login1/seat/seat0 interface=org.freedesktop.DBus.Properties method=PropertiesChanged destination=(null)
process 23463: arguments to dbus_message_new_method_call() were incorrect, assertion "path != NULL" failed in file ../../dbus/dbus-message.c line 1340.
This is normally a bug in some application using the D-Bus library.
[query_session_active] gs-listener-dbus.c:1124 (00:08:51): Couldn't allocate the dbus message
[listener_dbus_handle_system_message] gs-listener-dbus.c:1361 (00:08:51): systemd notified ActiveSession 0
[listener_session_switched_cb] gs-monitor.c:298 (00:08:51): Session switched: 0
[xroot_filter] gs-listener-x11.c:124 (00:08:52): ScreenSaver stopped
### 10 more seconds have passwd - Killing
### Killed now
これを既知の正常なシステムと比較すると、次のようになります。
$ comm -3 <(grep -iv grab good | sed 's/[0-9:]\+/[NN]/g;s/[ \t]\+/ /g' | sort) <(grep -iv grab bad | sed 's/[0-9:]\+/[NN]/g;s/[ \t]\+/ /g' | sort) | head -n2
[init_session_id] gs-listener-dbus.c[NN] ([NN])[NN] Got session-id[NN] (null)
[init_session_id] gs-listener-dbus.c[NN] ([NN])[NN] Got session-id[NN] /org/freedesktop/login[NN]/session/c[NN]
そして確かに、セッションのセットアップに関して何か非常に厄介なように見えます:
$ loginctl session-status
Could not get properties: No such process
TL; DR:systemdが/ procを読み取れない場合、ライトロッカーは画面を黒に保ちます
light-locker
は、dbus
がIPC
を提供することに依存しています。dbus
は、session
情報を提供するsystemd-logind
に依存しています。systemd-logind
は、/proc
がprocess
情報を提供することに依存しています。これはあまりうまく機能しないことを意味します:
$ file /sbin/init
/sbin/init: symbolic link to /lib/systemd/systemd
$ mount | grep proc
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime,hidepid=2,gid=1337)
そして、どちらも期待できません:
hidepidはsystemdと実際には互換性がありません。ごめんなさい。 [..]とにかく、これはsystemdによるものではないため終了します。 - レナートポタリング
部分的な解決策1
Partialソリューション。情報開示が付属しているためです。
特権のないプログラム(systemdなど、特権を削除した後)が/proc
のプロセス情報にアクセスできるようにします。
$ Sudo mount -o remount,hidepid=0 /proc
# and fix /etc/fstab accordingly
部分的な解決策2
Partialソリューション。systemdはログインしただけでなく、他の場所で壊れる可能性があるためです。
Systemd-logindを適切なグループに追加します。最も便利なのは、サービスドロップインを追加することです。
$ addgroup showpid
$ adduser myuser showpid
$ Sudo mount -o remount,hidepid=2,gid=showpid /proc
# and fix /etc/fstab accordingly
$ echo -e '[Service]\nSupplementaryGroups=showpid' | Sudo tee /etc/systemd/system/systemd-logind.service.d/10-showpid.conf
$ Sudo systemctl daemon-reload
$ Sudo systemctl restart systemd-logind
eitherソリューションの後、Got session-id: (null)
メッセージはGot session-id: /org/freedesktop/login1/c7
のようになり、ライトロッカーはdbus
を介して適切に通信できるようになります。 。
この方法をより速く理解するにはどうすればよいですか?
diff -ruiN
システム全体を取得してください。