help – firmware bug acpi region + pkcs#7 signature after 18.04 update

Just did a system update for an 18.04 install.

attempting to reboot gives firmware bug ACPI region does not cover.. and this follows with the PKCS#7 signature not signed.

Had a look similar errors. None seemed to provide the solution for this particular error.

It says things about waiting and time out. Some problems regarding waiting at any rate.