nvidia-387:
  Installed: 387.12-0ubuntu0~gpu16.04.1
  Candidate: 387.12-0ubuntu0~gpu16.04.1
  Version table:
 *** 387.12-0ubuntu0~gpu16.04.1 500
        500 http://ppa.launchpad.net/graphics-drivers/ppa/ubuntu xenial/main amd64 Packages
        100 /var/lib/dpkg/status