BIOS: Apyio Setup Utility, American Megatrends

Median laptops seem to have the boot-options locked. Unlocking involves booting with F2 held down to reach the BIOS menu and then make the following changes:

Security->Secure Boot Management->Secure Boot->Disabled
Boot->Launch CSM->Enabled

On Linux, you can use iasl to dump the DSDT tables:

cat /sys/firmware/acpi/tables/DSDT > dsdt.dat
iasl -d dsdt.dat
iasl -sa dsdt.dsl

which results in the dsdt.aml file.