arandr software package provides Simple visual front end for XRandR, you can install in your Debian 8 (Jessie) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install arandr
arandr is installed in your system.
Make ensure the arandr package were installed using the commands given below,
$ sudo dpkg-query -l | grep arandr *
You will get with arandr package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | X Window System software |
| Package | arandr |
| Version | 0.1.7.1-1 |
| Description | Simple visual front end for XRandR |
| Sub Section | x11 |