I've been trying to boot the FreeBSD 11-RC2 memstick on my Lenovo
B590, but to no avail.
The system freezes during boot, ending with the following message:
acpi0: <LENOVO TP-H5> on motherboard
ACPI Error: No handler for Region [ECOR] (0xfffff80003a33480) [EmbeddedControl] (20160527/evregion-180)
ACPI Error: Region EmbeddedControl (ID=3) has no handler (20160527/exfldio-320)
ACPI Error: Method parse/execution failed [\_SB.PCI0.LPCB.H_EC._REG] (Node 0xfffff80003a41d40), AE_NOT_EXIST (20160527/psparse-559)
This issue is still exists, even with newer in-kernel ACPI subsystem.