Disable screen locking with xubuntu 20.04 and lightdm

Question

I just installed Ubuntu 20.04 and then installed xubuntu-core. When prompted, I chose lightdm as my login manager. I then disabled everything I could find related to screen locking, but I still have to enter my password after the screen goes off. Is there some crazy hidden setting I am missing?

I realize I could remove lightlocker, but why in this context does "disable" not mean disable? Is it a bug or a design decision?

Solution 1

Ok, I think I found it. What's up with two screen-locking settings?

Solution 2

If you want to automate it or simply do it by command line, then you need to create or update 2 files:

~/.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-screensaver.xml with content:

<?xml version="1.0" encoding="UTF-8"?>

<channel name="xfce4-screensaver" version="1.0">
  <property name="saver" type="empty">
    <property name="mode" type="int" value="0"/>
    <property name="enabled" type="bool" value="false"/>
  </property>
  <property name="lock" type="empty">
    <property name="enabled" type="bool" value="false"/>
  </property>
</channel>

~/.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-power-manager.xml with content:

<?xml version="1.0" encoding="UTF-8"?>

<channel name="xfce4-power-manager" version="1.0">
  <property name="xfce4-power-manager" type="empty">
    <property name="power-button-action" type="empty"/>
    <property name="lock-screen-suspend-hibernate" type="empty"/>
    <property name="logind-handle-lid-switch" type="empty"/>
    <property name="blank-on-ac" type="int" value="0"/>
    <property name="blank-on-battery" type="int" value="0"/>
    <property name="dpms-enabled" type="bool" value="false"/>
    <property name="dpms-on-ac-sleep" type="empty"/>
    <property name="dpms-on-ac-off" type="empty"/>
    <property name="dpms-on-battery-sleep" type="empty"/>
    <property name="dpms-on-battery-off" type="empty"/>
    <property name="show-panel-label" type="empty"/>
    <property name="inactivity-sleep-mode-on-ac" type="empty"/>
    <property name="inactivity-sleep-mode-on-battery" type="empty"/>
    <property name="show-tray-icon" type="bool" value="false"/>
  </property>
</channel>

Comments

[Bruno]

On my system, each time this binary (/usr/bin/xfce4-screensaver-preferences) is launched, it reset the setting of ~/.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-screensaver‌​.xml so the only way is to edit the xml directly

[jarno]

I wonder, if you really need to disable "Enable Lock Screen"? Isn't it enough that you disable "Lock Screen with Screensaver" and "Lock Screen with System Sleep"? This settings dialog is for xfce4-screensaver, not for light-locker. Currently Xfce runs that screensaver eagerly so it you want to use another one, you have to uninstall xfce4-screensaver package: gitlab.xfce.org/apps/xfce4-screensaver/-/issues/55