xserver-xorg:
  Installed: (none)
  Candidate: 1:7.7+1ubuntu8.1
  Version table:
     1:7.7+1ubuntu8.1 0
        500 http://archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     1:7.7+1ubuntu8 0
        500 http://archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages