Comment 27 for bug 1971434

Not sure if related, but posting in case helpful to others who find this ticket.

I had an issue with the screen not going to sleep after upgrading from 20.04 to 22.04 and found this ticket. In my case, the screen wasn't blank but instead the gnome lock screen would stay on. I found that changing the "screen blank" time in settings did the trick. It was set to 15m and would lock but not blank (nor actually turn off the display); I changed the setting to 12m and then back to 15m and now it works again. Maybe some sort of issue in migrating settings on upgrade?