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user938363
Asked: 2018-02-26 09:07:53 +0800 CST

Can't change login name on Ubuntu 16.04 desktop

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I installed ubuntu 16.04 desktop on USB flash drive and setup an autologin during installation. The PC boots up and auto login successfully before I performed some system update for video driver installation. Now the system boots up and presents a login screen with a different user name which there is no password associated with and can't be changed. I can hit ctrl+alt+F1 to switch to a terminal screen but can't start X window with startx.

My question is how to login with a different user name on login screen?

Here is the login screen. Needs to login with a user other than miner1. enter image description here

16.04

2 Answers

  1. To change the username :

    sudo usermod -l newUsername oldUsername

    To change the homefolder :

    usermod -d /home/newHomeDir -m newUsername

    To Change the group:

    groupmod -n <newgroup> <oldgroup>

    To do this in one command:

    Login as root :

    usermod -l <newname> -d /home/<newname> -m <oldname>
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  2. Problem is fixed by disabling the screen lock after reinstalling the OS. Somehow the system locks the screen without revealing the password.

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