Could you please provide the output of apt-cache policy libxfixes? The version of the package you seem to have installed is not one provided by the official Ubuntu repositories.
** Changed in: dpkg (Ubuntu) Importance: Critical => Low ** Changed in: dpkg (Ubuntu) Status: Triaged => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1188470 Title: package libxfixes3 1:5.0-4ubuntu6 failed to install/upgrade: trying to overwrite shared '/usr/share/doc/libxfixes3/changelog.Debian.gz', which is different from other instances of package libxfixes3:amd64 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dpkg/+bug/1188470/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs