Pierre Neidhardt <mail@ambrevar.xyz> writes:

> This is a bit special as it seems to be the only module that 
> does not
> build on linux-libre-6.
>
> Still OK?

There's an open PR to fix the bbswitch build, but no response yet: 
https://github.com/Bumblebee-Project/bbswitch/pull/219.

Maybe it's worth considering using the updated fork until the 
official bbswitch is updated? 
https://github.com/madchic/bbswitch/tree/develop