I found a solution to the issue '2) Failure to suspend at all': I upgraded the kernel to 4.4.8.
Now patching HandleLidSwitchDocked=suspend in /etc/systemd/logind works for me too.
I found a solution to the issue '2) Failure to suspend at all': I upgraded the kernel to 4.4.8.
Now patching HandleLidSwitch Docked= suspend in /etc/systemd/logind works for me too.