As suggested by Mike Ferreira (mafoelffen):
If you logout of the GUI, and Select <Cntrl><Alt><F4> to get to VTTY4,... Log in to the console and do sudo systemctl poweroff
This attempt was also unsuccessful for powering off the laptop and needed manual powering down.
As suggested by Mike Ferreira (mafoelffen):
If you logout of the GUI, and Select <Cntrl><Alt><F4> to get to VTTY4,... Log in to the console and do
sudo systemctl poweroff
This attempt was also unsuccessful for powering off the laptop and needed manual powering down.