How To Customize The Screensaver Options In Gnome on Oracle Linux 7

 How To Customize The Screensaver Options In Gnome on Oracle Linux 7 (Doc ID 2264955.1)

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Available Dconf (gsettings) Configuration Keys
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Dconf keys can be used to configure the screensaver behavior, which reside under org.gnome.desktop.session.
idle-delay can be set to blank the screen after a specified number of seconds of inactivity.
lock-delay can be set to enable screen lock a specified number of seconds after the screen has blanked (after idle-delay).
There are a few other keys available to customize the behavior. 1

 

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How to set activation time and lock time
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The commands below show how to:
Blank the screen after 3 minutes of inactivity.
Lock the screen 5 minutes after it has blanked the screen.

- Per user settings (for the idle and lock delay)

Each user can change their own settings separately.

Execute the following commands as the user that needs the settings changed

#gsettings set org.gnome.desktop.session idle-delay 180
#gsettings set org.gnome.desktop.screensaver lock-delay 300
#gsettings set org.gnome.desktop.screensaver lock-enabled true

 

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Global Mandatory settings (for the idle and lock delay)
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System wide mandatory settings can also be enforced for all users.

Create or edit the the files below with the following content (as root):

# cat /etc/dconf/db/local.d/00-screensaver
[org/gnome/desktop/session]
idle-delay=uint32 180

[org/gnome/desktop/screensaver]
lock-enabled=true
lock-delay=uint32 300

# cat /etc/dconf/db/local.d/locks/screensaver
/org/gnome/desktop/session/idle-delay
/org/gnome/desktop/screensaver/lock-enabled
/org/gnome/desktop/screensaver/lock-delay

 

Afterwards run the command below to apply the settings:

# dconf update

Note: The file in /etc/dconf/db/local.d/locks/ makes the settings mandatory.

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Disabling the Screensaver
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1-The blanking and locking of a screensaver can be disabled if desired.
2- Set the following for the keys based on the above methods:
Set the idle-delay to 0 to prevent activation of the screensaver.
Set the lock-enabled to false to prevent locking of the screen.

Note: Other keys and their details can be found under /usr/share/glib-*/schemas/org.gnome.desktop.screensaver.gschema.xml

 

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Some Key Definitions
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idle-delay

Time before session is considered idle. [org/gnome/desktop/session]
The number of seconds of inactivity before the session is considered idle. (default: 300)

lock-enabled

Lock on activation. [org/gnome/desktop/screensaver]
Set this to TRUE to lock the screen when the screensaver goes active. (default: true)

lock-delay

Time before locking. [org/gnome/desktop/screensaver]
The number of seconds after screensaver activation before locking the screen. (default: 0)

user-switch-enabled

Allow user switching. [org/gnome/desktop/screensaver]
Set this to TRUE to offer an option in the unlock dialog to switch to a different user account. (default: true)