gvidm software package provides quickly and easily change video resolutions in X, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gvidm
gvidm is installed in your system.
Make ensure the gvidm package were installed using the commands given below,
$ sudo dpkg-query -l | grep gvidm *
You will get with gvidm package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | X Window System software |
| Package | gvidm |
| Version | 0.8-12+b1 [amd64, arm64, armel |
| Description | quickly and easily change video resolutions in X |
| Sub Section | x11 |