LXDE Forums

Hello,
We're using a Linux distribution with the LXDE desktop environment in a school library, and students use the computer using a temporary user account. The problem is that students change the desktop wallpaper jokingly without locking the screen or signing off. What I've tried so far is to enforce a dconf read-only lock on the background property (/org/gnome/desktop/background/picture-uri), but I had to create the etc/dconf/db/local.d directory, which makes me wonder if LXDE uses dconf at all (although I can use dconf-editor).

Here are the steps I followed to do the dconf lock: https://askubuntu.com/questions/1034000 ... 38#1034238

Is it possible to prevent users from changing it?
Thanks in advance.

Did it not work?
Any diagnostic messages?
The askubuntu suggests that what you want is possible.
If dconf is installed then your distro probably uses it?

On a non-technical note:
What you're trying to do is futile.
It's a guest account, and as soon as they log off the wallpaper is gone again.
The sole purpose is to misbehave (I suppose; you didn't say why you need to prevent such activity).
If you manage to prevent it, they'll find a workaround; maybe open the offensive image in a browser, fullscreen.

Automatic log-off after some time of inactivity is probably better.