Is there any way that I can fix ECDT, or do I have to remove the "EC0 to EC" patch?
Hmm... Just figured out that my laptop actually doesn't have ECDT.
Sorry but I got these error while booting up (with fake EC device)
ACPI Error: [_SB_.PCI0.SATA] Namespace lookup failure, AE_NOT_FOUND (20140828/dswload-125)
ACPI Exception: AE_NOT_FOUND, During name lookup/catalog (20140828/psobject-131)
ACPI Error: [\_SB_.PCI0.BAT0] Namespace lookup failure, AE_NOT_FOUND (20140828/dswload-125)
ACPI Exception: AE_NOT_FOUND, During name lookup/catalog (20140828/psobject-131)
Finally I have succeeded. Thank you very much Rehabman for everything