bbswitch-source 0.8-15ubuntu1 (arm64 binary) in ubuntu mantic

 bbswitch is a kernel module which automatically detects the required ACPI
 calls for two kinds of Optimus laptops. It has been verified to work with
 "real" Optimus and "legacy" Optimus laptops (at least, that is what the
 author Lekensteyn calls those).
 .
 Transitional package to bbswitch-dkms, as on Ubuntu, only dkms
 package are fully supported.