tyancolte@EpicBuntu:~/Downloads$ sudo dpkg -i fontconfig_2.11.0-0ubuntu4_amd64.deb 
dpkg: warning: downgrading fontconfig from 2.11.1-0ubuntu6 to 2.11.0-0ubuntu4
(Reading database ... 553418 files and directories currently installed.)
Preparing to unpack fontconfig_2.11.0-0ubuntu4_amd64.deb ...
Unpacking fontconfig (2.11.0-0ubuntu4) over (2.11.1-0ubuntu6) ...
dpkg: dependency problems prevent configuration of fontconfig:
 dpkg (1.17.23ubuntu1) breaks fontconfig (<< 2.11.1-0ubuntu5) and is installed.
  Version of fontconfig to be configured is 2.11.0-0ubuntu4.

dpkg: error processing package fontconfig (--install):
 dependency problems - leaving unconfigured
Processing triggers for man-db (2.6.7.1-1ubuntu1) ...
Processing triggers for doc-base (0.10.5) ...
Possible precedence issue with control flow operator at /usr/share/perl5/Debian/DocBase/DB.pm line 101.
Processing 1 changed doc-base file...
Registering documents with scrollkeeper...
Errors were encountered while processing:
 fontconfig
tyancolte@EpicBuntu:~/Downloads$ man dpkg
tyancolte@EpicBuntu:~/Downloads$ sudo dpkg -P fontconfig-config 
dpkg: dependency problems prevent removal of fontconfig-config:
 fontconfig depends on fontconfig-config.
 libfontconfig1:i386 depends on fontconfig-config (= 2.11.0-0ubuntu4.1).
 libfontconfig1:amd64 depends on fontconfig-config (= 2.11.0-0ubuntu4.1).

dpkg: error processing package fontconfig-config (--purge):
 dependency problems - not removing
Errors were encountered while processing:
 fontconfig-config
tyancolte@EpicBuntu:~/Downloads$