I have an Acer Aspire E1 (ES1-311-P1D5) and I installed Ubuntu 14.10 on it. SecureBoot is enabled.
When I try to shutdown the system, it will stop but won't shutdown the computer itself. I've read that this is an ACPI issue, so I tried the kernel parameters 'acpi=off' and 'acpi=force'. It didn't work.
What else can I do now?