Neither HandleLidSwitch, nor HandleLidSwitchDocked explicitly un-commented and set as "suspend" worked for me on Ubuntu 17.04.
The machine neither suspends on lid down, nor does it prompt me for a password on lid up.
Neither HandleLidSwitch, nor HandleLidSwitch Docked explicitly un-commented and set as "suspend" worked for me on Ubuntu 17.04.
The machine neither suspends on lid down, nor does it prompt me for a password on lid up.