A pre-compiled module has been moved to /lib/modules/<kernel-version>, but ‘modprobe -a <modulename>’ fails to load it.
What needs to be done to enable usage of this module?

A.
The kernel must be re-compiled

B.
The system must be rebooted

C.
make modules_install must be run

D.
depmod must be run

E.
modules.conf or modprobe.conf must be edited

Explanation:
While we load the modules, it checks the dependency whether loaded or not.
For dependency it checks the modules.dep file that file should generate by running the depmod command.
Most probably unable to load the modules is due to dependencies.
-a or –all Insert all modules matching the given wildcard. This option is provided for backwards compatibility:a