At some point in the last few months, Pop_OS has stopped sleeping / suspending when I close my laptop's lid.
Even manually telling it systemctl suspenddoesn't work; it just takes me back to the lock screen.
Running sudo /lib/systemd/systemd-sleep suspenddoes suspend. As does echo "mem" > /sys/power/state. But when I push the power button I get straight in, no lock screen.
Help! How do I get my laptop to sleep when the lid is closed, and awaken to a lock screen?
