22.8. 用户闲置时锁定屏幕

流程

1. 在 etc/dconf/db/local.d/00-screensaver 文件中为系统范围的设置创建一个本地数据库：

   [org/gnome/desktop/session]
   # Set the lock time out to 180 seconds before the session is considered idle
   idle-delay=uint32 180
   [org/gnome/desktop/screensaver]
   # Set this to true to lock the screen when the screensaver activates
   lock-enabled=true
   # Set the lock timeout to 180 seconds after the screensaver has been activated
   lock-delay=uint32 180

   您必须包含 uint32 以及整数键值，如下所示。

2. 覆盖用户设置，并防止用户在 /etc/dconf/db/local.d/locks/screensaver 文件中更改它：

   # Lock desktop screensaver settings
   /org/gnome/desktop/session/idle-delay
   /org/gnome/desktop/screensaver/lock-enabled
   /org/gnome/desktop/screensaver/lock-delay

3. 更新系统数据库：

   # dconf update

4. 在系统范围的设置生效前，用户必须退出并重新登录。