ldm-themes software package provides Collection of themes for the LTSP login manager, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install ldm-themes
ldm-themes is installed in your system.
Make ensure the ldm-themes package were installed using the commands given below,
$ sudo dpkg-query -l | grep ldm-themes *
You will get with ldm-themes package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Miscellaneous |
| Package | ldm-themes |
| Version | 15.01.2 |
| Description | Collection of themes for the LTSP login manager |
| Sub Section | Misc |