This file is indexed.

/usr/share/glib-2.0/schemas/org.gnome.desktop.screensaver.gschema.xml is in gsettings-desktop-schemas 3.28.0-1ubuntu1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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<?xml version="1.0" encoding="UTF-8"?>
<schemalist gettext-domain="gsettings-desktop-schemas">
  <schema id="org.gnome.desktop.screensaver" path="/org/gnome/desktop/screensaver/">
    <key name="idle-activation-enabled" type="b">
      <default>true</default>
      <summary>Activate when idle</summary>
      <description>
        Set this to TRUE to activate the screensaver when the session is idle.

        DEPRECATED: This key is deprecated and ignored.
        Set org.gnome.desktop.session idle-delay to 0 if you do not want to activate the screensaver.
      </description>
    </key>
    <key name="lock-enabled" type="b">
      <default>true</default>
      <summary>Lock on activation</summary>
      <description>Set this to TRUE to lock the screen when the screensaver goes active.</description>
    </key>
    <key name="lock-delay" type="u">
      <default>0</default>
      <summary>Time before locking</summary>
      <description>The number of seconds after screensaver activation before locking the screen.</description>
    </key>
    <key name="show-notifications" type="b">
      <default>false</default>
      <summary>Show notifications in the lock screen</summary>
      <description>
        Whether notifications are shown in the lock screen or not. This only affects the standard experience.

        DEPRECATED: This key is deprecated and ignored.
        It has been superseded by org.gnome.desktop.notifications show-in-lock-screen.
      </description>
    </key>
    <key name="show-full-name-in-top-bar" type="b">
      <default>true</default>
      <summary>Show full name in the lock screen</summary>
      <description>Whether the user’s full name is shown in the lock screen or not. This only affects the screen shield, the name is always shown in the unlock dialog.</description>
    </key>
    <key name="ubuntu-lock-on-suspend" type="b">
      <default>true</default>
      <summary>Lock on suspend</summary>
      <description>Set this to TRUE to lock the screen when the system suspends.</description>
    </key>
    <key name="embedded-keyboard-enabled" type="b">
      <default>false</default>
      <summary>Allow embedding a keyboard into the window</summary>
      <description>
        Set this to TRUE to allow embedding a keyboard into the window when trying to unlock.  The “keyboard_command” key must be set with the appropriate command.

        DEPRECATED: This key is deprecated and ignored.
</description>
    </key>
    <key name="embedded-keyboard-command" type="s">
      <default>''</default>
      <summary>Embedded keyboard command</summary>
      <description>
        The command that will be run, if the “embedded_keyboard_enabled” key is set to TRUE, to embed a keyboard widget into the window. This command should implement an XEMBED plug interface and output a window XID on the standard output.

        DEPRECATED: This key is deprecated and ignored.
      </description>
    </key>
    <key name="logout-enabled" type="b">
      <default>false</default>
      <summary>Allow logout</summary>
      <description>
        Set this to TRUE to offer an option in the unlock dialog to allow logging out after a delay.  The delay is specified in the “logout_delay” key.

        DEPRECATED: This key is deprecated and ignored.
      </description>
    </key>
    <key name="logout-delay" type="u">
      <default>7200</default>
      <summary>Time before logout option</summary>
      <description>
        The number of seconds after the screensaver activation before a logout option will appear in the unlock dialog. This key has effect only if the “logout_enable” key is set to TRUE.

        DEPRECATED: This key is deprecated and ignored
      </description>
    </key>
    <key name="logout-command" type="s">
      <default>''</default>
      <summary>Logout command</summary>
      <description>
        The command to invoke when the logout button is clicked.  This command should simply log the user out without any interaction. This key has effect only if the “logout_enable” key is set to TRUE.

        DEPRECATED: This key is deprecated and ignored.
      </description>
    </key>
    <key name="user-switch-enabled" type="b">
      <default>true</default>
      <summary>Allow user switching</summary>
      <description>Set this to TRUE to offer an option in the unlock dialog to switch to a different user account.</description>
    </key>
    <key name="status-message-enabled" type="b">
      <default>true</default>
      <summary>Allow the session status message to be displayed</summary>
      <description>
        Allow the session status message to be displayed when the screen is locked.

        DEPRECATED: This key is deprecated and ignored.
      </description>
    </key>
    <key name="picture-options" enum="org.gnome.desktop.GDesktopBackgroundStyle">
      <default>'zoom'</default>
      <summary>Picture Options</summary>
      <description>
        Determines how the image set by wallpaper_filename is rendered.
        Possible values are “none”, “wallpaper”, “centered”, “scaled”,
        “stretched”, “zoom”, “spanned”.
      </description>
    </key>
    <key name="picture-uri" type="s">
      <default>'file:///usr/share/backgrounds/gnome/adwaita-lock.jpg'</default>
      <summary>Picture URI</summary>
      <description>
        URI to use for the background image. Note that the backend only supports
        local (file://) URIs.
      </description>
    </key>
    <key name="picture-opacity" type="i">
      <range min="0" max="100"/>
      <default>100</default>
      <summary>Picture Opacity</summary>
      <description>
        Opacity with which to draw the background picture.
      </description>
    </key>
    <key name="primary-color" type="s">
      <default>'#023c88'</default>
      <summary>Primary Color</summary>
      <description>
        Left or Top color when drawing gradients, or the solid color.
      </description>
    </key>
    <key name="secondary-color" type="s">
      <default>'#5789ca'</default>
      <summary>Secondary Color</summary>
      <description>
        Right or Bottom color when drawing gradients, not used for solid color.
      </description>
    </key>
    <key name="color-shading-type" enum="org.gnome.desktop.GDesktopBackgroundShading">
      <default>'solid'</default>
      <summary>Color Shading Type</summary>
      <description>
        How to shade the background color. Possible values are “horizontal”,
        “vertical”, and “solid”.
      </description>
    </key>
  </schema>
</schemalist>