Can't lock the computer

Budgie Desktop
1

Hello, I can’t lock my computer either using win+L keys or using the menu in the top right. Neither has any affect whats so ever. My laptop is fairly old but am hoping not to upgrade.
Its a Lenovo ThinkPad E470. Hope some one can help. This is really annoying when on the move.

If you need anything else to help please let me know.
Thanks,

2

Have you checked if you have this package installed?

3

sudo apt purge gnome-shell-common
Reading package lists… Done
Building dependency tree… Done
Reading state information… Done
Package ‘gnome-shell-common’ is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 25 not upgraded.

No affect…

Thanks,

4

… and is gnome-screensaver installed?

5

yeah that’s installed, gnome-screensaver is already the newest version (3.6.1-13ubuntu4).

6

this turned out to be, strangely the lock screen being disabled. The below command fixed it.

gsettings set org.gnome.desktop.lockdown disable-lock-screen false