How to blank the screen of a headless Linux server
Context
This setup allow to disable (blank the console) any connected screen to a headless linux server.
This can be a desirable behavior while converting a laptop into a headless server and avoid burning the display or have too much light coming from it.
How To
You can configure it within GRUB as part of the default command line.
To do so, open grub :
sudo nano /etc/default/grub
and edit GRUB_CMDLINE_LINUX_DEFAULT by adding consoleblank=300 at the end of the arguments.
NOTE The
300in the example is the duration (in second) before the screen effectively blank. I prefer to give myself 5 minutes before it blanks, so I set 60 * 5 =300
Once you set this parameter, you need to regenerate grub and it will work on the next boot of your device.
sudo update-grub