How to disable automatic login?

Question

I was playing around with "User accounts" and somehow set automatic login. Now, when I start my PC, it just has one button named as "login". Clicking that button, directly logs me in to my PC.

There is no music or no asking for password while logging in. As a side effect, it asks me separately for keyring password

How to disable auto login and make login/keyring password unified again like before?

NOTE: Attempting to disable Automatic Login from System Settings > User Accounts does not work.

This is the content of my /etc/lightdm/lightdm.conf (where I have commented the autologin for my username mgandhi):

[SeatDefaults]
greeter-session=unity-greeter
user-session=ubuntu
#autologin-user=mgandhi

Answer 1

System Setings

Disable Automatic Login

Answer 2

gksu gedit /etc/lightdm/lightdm.conf

you should see something similar to this

[SeatDefaults]
autologin-guest=false 
autologin-user=username
autologin-user-timeout=0
autologin-session=lightdm-autologin
greeter-session=unity-greeter
user-session=ubuntu

remove or put a # at the start of each line containing autologin, and save/exit and reboot to test.

Answer 3

go to your terminal and write this:

passwd

it will ask you with your new unix password and solved. :)

then, later, you can go to your user account and change anything:)

• Mar

Answer 4

Ok, finally the problem is solved. I got an email from an occasional stack-exchange visitor Mr. Rafter. Following is the way:

• Run "sudo grep nopasswd /etc/*"
• This will display at least 2 lines:

/etc/group:nopasswdlogin:x:112:<login name>
/etc/gshadow:nopasswdlogin:!::<login name>

• Edit those files with sudo and remove only <login name> from those lines and save.
• Go to "User Accounts" and disable the automatic login
• Restart the computer and now it should ask for the password again!

Answer 5

I had the same problem and it was solved by the command:

sudo gpasswd -d USER nopasswdlogin

where you should change USER by your user name.

Answer 6

System Settings > User Accounts. Select your user and disable automatic login.

Answer 7

It's rare that @duffydack answer does not fit you... try this:

on a terminal do:

sudo vi /etc/gdm/custom.conf

or

sudo nano /etc/gdm/custom.conf

Your file should now look something like this:

[daemon]
AutomaticLoginEnable=false
AutomaticLogin=craig
TimedLoginEnable=false
TimedLogin=craig
TimedLoginDelay=10
DefaultSession=gnome-2d

edit AutomaticLoginEnable=true to AutomaticLoginEnable=false

that's other option.

Answer 8

Since you was playing around with "User accounts" and I made same mistake, I got in same hole.

Keep cool.

You just set your system to no-password when "playing around".

That's why your system log in (auto or not) without asking for password, and this is the same reason keyring system asks for it (cause doesn't received from the system).

So, action jackson:

1. Check what I am talking about. Go to Menu in Top Bar and choose 1st item (Switch User Account...) and see Login button (what mean you already logged and no user to choose, u can just login, u have no pass (OH!)
2. After clicking Login, and back to desktop, Choose again in top menu bar the logout command, and logout. You gonna see a button with your username, no "login" button.
3. Correcting things: Setting a new password. Set the same old one, to keyring dont get confused again, or it will ask you for the password again, after login with password provided. Go to same menu of item 1 and choose last item now (User Accounts...) and on this Gui interface , unlock on the respective button probably providing no password at all (just Enter, if this not works try with old pass..), and then THE GREAT MAGIC TRICK

CLICK THE PASSWORD BOX (its a hidden button, oh devil UI)

this open a dialog box (!) where u probably hit the "login without password" option AND with automatic login option ON too (outside this dialog, on User Accounts screen). SO:...

When you tell the computer to log in without a password (ITS NOT the same as Automatic Login) he does exactly this , log in, without password. So password = nothing. Then keyring goes crazy. (aha!) So, choose the right option now:

Set a password now

and after doing all the entry password stuff, simple hit enter, set automatic login off, to feel again the pleasure of having a password, and if you want it on again, ok, turn it on, but dont log in without a password again. =D

I hope this helps you to solve your problem. Was a good lesson to me. Bad UI to Ubuntu -1 on this case.