brightd software package provides daemon which regulates brightness of LCDs dynamically, 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 brightd
brightd is installed in your system.
Make ensure the brightd package were installed using the commands given below,
$ sudo dpkg-query -l | grep brightd *
You will get with brightd package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Utilities |
| Package | brightd |
| Version | 0.4.1-1ubuntu1 |
| Description | daemon which regulates brightness of LCDs dynamically |
| Sub Section | Utils |