sudo dpkg -a --configure

dpkg: dependency problems prevent configuration of bcmwl-kernel-source:
 bcmwl-kernel-source depends on dkms; however:
  Package dkms is not installed.

dpkg: error processing package bcmwl-kernel-source (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 bcmwl-kernel-source