I've been trying to solve an issue with AMT for couple of days and have nowhere to turn anymore, so I'm trying here.
My problem is simple: After I turn OFF PC which has AMT configured AND AFTER OS has loaded (VMware ESXi), AMT becomes unreachable.
AMT is set up with Power Policies : Desktop: ON in S0, ME Wake in S3, S4-5 active.
If I power OFF system BEFORE OS has loaded, AMT is accessible after PC has been turned OFF.
Im using Gigabyte GA-Q87M-D2H motherboard (which has Intel I217-LM NIC on-board) with i7-4770S CPU, 32G RAM and Seasonic 80+Gold PSU. I've tried changing PSU, removing UPS ( directly connecting PC to power outlet ) without any difference.
When PC is ON, i can access all AMT features such as KVM, turn it ON, power cycle, reset etc. I can also turn OFF the PC, and if I do it BEFORE OS loads ( or if I remove OS drive altogether ) I can reach AMT while PC is OFF and turn it back ON. But once OS is loaded, and i shutdown PC (graceful or just long press on the power button ) AMT is unreachable until powering on the PC.
Any advise I can try ? I've tried loading safe and optimized BIOS defaults without any difference.