There was some issues with the fallback to passive mode on 2.3, but on
2.4 adaptive mode is always enabled upstream and thermald will fallback
to passive if necessary.
a6e68a65b5/data/thermald.service.in (L9)
thermald has two modes: zero-config and manual. Sometimes it is useful
to manually configure thermald to achieve better thermal results or to give
thermald a hand when detecting possible cooling options.
