There are two screen saver options in Redhat 6.6 menu System->Preference->Screensaver:(1) The option Active screen saver when computer is idle. Check this option will cause the screen saver is active when the idle time reach the limit;(2) The option Lock screen when screen saver is active. Check this option will cause the screen locked when the screen saver is active; otherwise, the screen will not locked when the screen saver is active.My question is that how to monitor the screen lock/unlock if the option (1) is checked?I tried to use the dbus command:dbus-monitor --session interface='org.gnome.ScreenSaver'  Unfortunately, the result is not correct as it only catch the message ActiveChanged, even I check the option (2) and the screen is locked actually.signal sender=:1.37 -> dest=(null destination) serial=25 path=/org/gnome/ScreenSaver; interface=org.gnome.ScreenSaver; member=ActiveChanged   boolean true  If I run the commnad gnome-screensaver-command -l manually, the dbus-monitor can catch the following message:method call sender=:1.99 -> dest=org.gnome.ScreenSaver serial=3 path=/org/gnome/ScreenSaver; interface=org.gnome.ScreenSaver; member=Locksignal sender=:1.37 -> dest=(null destination) serial=23 path=/org/gnome/ScreenSaver; interface=org.gnome.ScreenSaver; member=ActiveChanged   boolean true  I referred the document of org.gnome.ScreenSaver:https://people.gnome.org/~mccann/gnome-screensaver/docs/gnome-screensaver.htmlIt seems the method call Lock means Request that the screen be locked.The signal ActiveChanged only means the screen saver is active or not.  So I suspect this is a Redhat 6.6 bug:The message Lock is missed when the screen saver is active and the screen is locked by the above two options.It cause I can't detect the screen locked or not in this scenario.  Is there any workaround solution for this issue? Is it possible that I can read the config file that store the above two options?Thanks.
How to detect the screen is locked or not when the screen saver is active on Redhat 6.6?
linux;rhel;d bus;screensaver