ldm-ubuntu-theme software package provides Ubuntu theme for the LTSP Display Manager, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install ldm-ubuntu-theme
ldm-ubuntu-theme is installed in your system.
Make ensure the ldm-ubuntu-theme package were installed using the commands given below,
$ sudo dpkg-query -l | grep ldm-ubuntu-theme *
You will get with ldm-ubuntu-theme package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Miscellaneous |
| Package | ldm-ubuntu-theme |
| Version | 2:2.0.47 |
| Description | Ubuntu theme for the LTSP Display Manager |
| Sub Section | misc |