Unattended boot, Grub, Ubuntu and power failure.

What do these four things have in common? Ubuntu headless server will not boot after power failure as Grub will indefinitely wait for user input. The root of this problem lies inside Ubuntu default Grub configuration as Grub will simply set timeout to infinity when recordfail parameter is set.

The easiest way to solve the above-mentioned issue is to edit /etc/default/grub configuration file and define GRUB_RECORDFAIL_TIMEOUT variable to set timeout after unclean shutdown.

$ echo GRUB_RECORDFAIL_TIMEOUT=20 | sudo tee -a /etc/default/grub
$ sudo update-grub

If you want to understand why this issue is happening then read the following merge request by Ben Howard, and reviewed by Colin Watson.

Milosz Galazka's Picture

About Milosz Galazka

Milosz is a Linux Foundation Certified Engineer working for a successful Polish company as a system administrator and a long time supporter of Free Software Foundation and Debian operating system.

Gdansk, Poland https://sleeplessbeastie.eu