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Kalle Elmér
Asked: 2019-04-15 02:29:28 +0800 CST

Prevent Power Off and Lock

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I have a PC with Ubuntu 18.04 in a semi-public environment. There is a non-admin user account that can be used by anyone without logging in.

How can I prevent the user from shutting down the system, putting it in standby, or locking the screen?

Disabling the GUI buttons would be sufficient, if there's a way to do that.

18.04

1 Answers

  1. Apparently, this was a hard-to-google kind of issue, but after manually browsing through the settings with dconf-editor, I found what I had to change.

    To prevent the user from logging out, locking the screen, or powering off the system, change three settings with these commands in a terminal:

    gsettings set org.gnome.desktop.lockdown disable-lock-screen true
gsettings set org.gnome.desktop.lockdown disable-log-out true
gsettings set org.gnome.desktop.lockdown disable-user-switching true

    Perhaps this will help someone else in the future.

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