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:
 powerdevil : Depends: libpowerdevilcore2 but it is not installed
E: Unmet dependencies. Try using -f.
kaj@kaj-Lenovo:~$ sudo apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer required:
  kde-config-pimactivity libllvm3.4 libpimactivity4 libpowerdevilcore1
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
  libpowerdevilcore2
The following NEW packages will be installed:
  libpowerdevilcore2
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
Need to get 0 B/83.3 kB of archives.
After this operation, 324 kB of additional disk space will be used.
Do you want to continue? [Y/n]
(Reading database ... 156585 files and directories currently installed.)
Preparing to unpack .../libpowerdevilcore2_4%3a5.0.1-0ubuntu1~ubuntu14.10~ppa4_amd64.deb ...
Unpacking libpowerdevilcore2 (4:5.0.1-0ubuntu1~ubuntu14.10~ppa4) ...
dpkg: error processing archive /var/cache/apt/archives/libpowerdevilcore2_4%3a5.0.1-0ubuntu1~ubuntu14.10~ppa4_amd64.deb (--unpack):
 trying to overwrite '/usr/lib/x86_64-linux-gnu/libpowerdevilcore.so.2.0.0', which is also in package libpowerdevilcore1 4:5.0.1-0ubuntu1~ubuntu14.10~ppa3
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/libpowerdevilcore2_4%3a5.0.1-0ubuntu1~ubuntu14.10~ppa4_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)