I had Ubuntu 18.04 LTS and I upgraded to 20.04. The lock screen to ask password after some time it was working perfectly. After the upgrade stopped working. I tried to go to Ubuntu settings and check if it’s enabled and yes is enabled to lock screen ifor 5 minutes but the screen is never locked again after the upgrade. Any idea how to fix it?
The computed is a Lattepanda 864s. But that is not an issue. It was working everything perfect but after the update to the 20.04 stopped working. All the rest of the system works very well. It’s just is not,locking the screen to give password.