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v010dya
Asked: 2017-01-21 02:04:16 +0800 CST

After updating screen no longer locks

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After upgrading to 16.04 my screen no longer locks after I leave the computer running without usage.

What do I need to check to see why this happens?

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$ gsettings get org.gnome.desktop.lockdown disable-lock-screen
false
$ gsettings get org.gnome.desktop.screensaver lock-delay
uint32 30
16.04

2 Answers

  1. Best Answer

    Ok, i have managed to find the problem. Thanks to all the people who have tried to give me hints in the comments, but in the end it was something completely different. I will post that as an answer, hoping that at least one person will benefit from that somewhere in the world.

    I have found that in the Settings Editor within xcfe4-session -> startup -> screensaver -> type i had xscreensaver. So i have attempted to install it and it actually turned on. But the lock screen at the end was clearly not from XCFE, that gave me an idea to change xscreensaver in the settings to light-locker, and now i have just tested it and it works.

    Settings Editor - session configuration

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  2. XFCE uses the xfce4-session Window manager and the xscreensaver and there seems to be something wrong in your settings which I cannot locate exactly, so from a console: 

    sudo apt purge xfce4-session
sudo apt purge xscreensaver
sudo apt autoremove
sudo apt install xfce4-session
sudo reboot

    this will purge all of your screensaver-related settings and reinstall everything and should bring you back to the default state.

    Note: Going to the first console is accomplished by pressing Ctrl+Alt+F1

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