In this tutorial how to enable root login on the Ubuntu desktop. Sometime default Ubuntu not show root user login, so must be enable this manually.

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My Ubuntu 21.04 info:

#################################
Server IP 	: 10.66.100.6
OS		: Ubuntu 21.04
Disk 		: 25 GB
RAM		: 2GB
vCPU 		: 2
Service 	: Ubuntu root login
#################################

Step #01: Check server operating system and ip address.

tech@ubuntu21:~/Desktop$ lsb_release -a && ip r

Going to root user using sudo permission.

tech@ubuntu21:~$ sudo -i

Then type current user password and go to root user. Then setup root user password using below command.

root@ubuntu21:~# passwd

Open below file and allow root login true.

root@ubuntu21:~# vi /etc/gdm3/custom.conf

Insert below line into this custom.conf file.

AllowRoot=true

Step #02: Open another file and comment one line.

root@ubuntu21:~# vi /etc/pam.d/gdm-password

Comment below line.

#auth required pam_succeed_if.so user != root quiet_success

Now reboot your Ubuntu desktop and see Not listed? option.

root@ubuntu21:~# reboot

Now click on Not listed? and type root press Enter and then type root password.

If you see any error so please see my YouTube channel for more details.

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I am system administrator as Windows and Linux platform. I have 4 years skilled from the professional period. I have to configure Linux based system such as an Asterisk VOIP system, Network monitoring tools (ZABBIX), Virtualization (XEN Server), Cloud computing (Apache CloudStack) etc. Now share my professional skill each interested person.
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