How to enter recovery mode after failed login¶

If authd and/or the broker are missing, corrupted, or broken in any way, a user may be prevented from logging in.

To get access to the system for modifying configurations and installations in such cases, there are two main options:

Log in as root user or another local user with administrator privileges
Boot into recovery mode to get root access

The steps required for entering recovery mode are included below.

Boot into recovery mode¶

If it is not possible to log in with the root user account or another local user account with administrator privileges, the user can boot into recovery mode:

Reboot the device
During the reboot, press and hold the right SHIFT key
When the Grub menu appears, select advanced options for Ubuntu
Choose recovery mode for the correct kernel version
Select drop to root shell prompt

The user then has access to the root filesystem and can proceed with debugging.