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I used to modify /etc/lightdm/lightdm.conf, adding the line greeter-show-manual-login=true, in order to allow login for hidden users and root.

Now I've just installed the new Ubuntu 14.04 and the file lightdm.conf is no longer located in /etc/lightdm. It's in /etc/init and has been totally modified.

How can I force lightdm login screen to show a field to input a login name?

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Ok I finally found the solution, very simple. The file to edit is now located in /usr/share/lightdm/lightdm.conf.d, and is called: 50-ubuntu.conf.

I just added the line:

greeter-show-manual-login=true

and on next reboot I was able to input any user name on the login screen.

enter image description here

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2  
Rather than editing a default system file, why not add your own to the lightdm.conf.d folder? – bshacklett Nov 26 '14 at 18:48
    
If you do make a completely new file as suggested by @bshacklett, you need to start it with [SeatDefaults]. – pix Jan 16 at 14:34

I also had the same issue with Ubuntu 14.04 installation. But I resolved the problem by following this site.

The solution is to create a file lightdm.conf inside /etc/lightdm/ and put the following contents in it:

[SeatDefaults]
greeter-show-manual-login=true

After a system reboot, I was able to login with other users.

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On the Ubuntu 14.04 64bit the configuration file changed to /usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf But on 32bit is same as before – user3597121 Aug 21 '14 at 15:30

Also you should do following step:

update /etc/pam.d/common-session and change the line:

session sufficient pam_lsass.so

to:

session [success=ok default=ignore] pam_lsass.s

After a reboot, my path was ok, and everything seems to be working as normal again.

See the bug report

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In addition to the greeter-show-manual-login=true option, one could use greeter-hide-users=true. Personally that's that I have in my /etc/lightdm/lightdm.conf : the manual login option is commented out, with only hide users option left.

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protected by Community Aug 21 '14 at 17:53

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