[Ubuntu Wiki] Update of "DebuggingScreenLocking/HowScreenLockingWorks" by mdeslaur

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The following page has been changed by mdeslaur:
http://wiki.ubuntu.com/DebuggingScreenLocking/HowScreenLockingWorks?action=diff&rev1=10&rev2=11

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  When GNOME Power Manager wants to put the computer into a suspend state, it performs the following steps:
  
-  * Locks the GNOME Keyring
+  * Locks the GNOME Keyring (by default, only for hibernate. See /apps/gnome-power-manager/lock in gconf)
   * Using DBus, sends a "lock screen" signal to gnome-screensaver
   * Waits to get confirmation from gnome-screensaver that the screen is locked (with a 5 second timeout)
   * Tells DeviceKit-Power to suspend the hardware (prior to Karmic, HAL was used)