# apt-get -f install --reinstall debconf libgcc1
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 libgcc1 : Depends: gcc-5-base (= 5.1~rc1-0ubuntu1.1) but it is not going to be installed
 linux-image-extra-3.19.0-30-generic : Depends: linux-image-3.19.0-30-generic but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).