login problem for 13.10, my username does not appear

Question

After upgrading my Ubuntu to the newest version 13.10, in the login interface, my account does not appear. I can login the guest session. There is also a remote login. I have no place to input my username to login my account. Does anyone have the same problem?

----EDIT----

Here is the file lightdm.conf

[SeatDefaults]

greeter-session=unity-greeter

user-session=ubuntu

----EDIT TWO---

Here is the official bug report:

https://bugs.launchpad.net/ubuntu/+source/unity-greeter/+bug/1235785

Answer 1

Found the solution that worked for me. Because I had installed likewise-open it had told lightdm to hide local users.

open the following file from command line:

sudo nano /etc/lightdm/lightdm.conf

In the [SeatDefaults] section, there's a line that should say the following:

greeter-hide-users=false

(mine had gotten changed to true, so all local users weren't being displayed. Rebooted after than and I can see my local users again.

Answer 2

Problem partially solved by login in the tty1 as root and run:

 /usr/lib/lightdm/lightdm/lightdm-set-defaults --autologin=USERNAME

and then

reboot

See also:

https://wiki.archlinux.org/index.php/LightDM

Now after reboot, I am in my account. But if I log out, my account still does not appear in the list.