Q:

How to make Lubuntu login automatically?

I want to know how to make Lubuntu 14.04 restart every two hours, login, and open a program. I am currently stuck on the first part which is to make it login automatically. I have tried changing lightdm.conf and lightdm.conf.d folder, and default.conf to no avail. What should I do?

A:

According to the Lubuntu documentation,  https://help.ubuntu.com/community/Lubuntu/Boot_Install_Login#For_release_12.04_and_on_.28LightDM.29,
You will need to create an /etc/lightdm/lightdm.conf with these contents: (do this as root) 
[SeatDefaults]
autologin-user=<YOUR USER>
autologin-user-timeout=0
# Check https://bugs.launchpad.net/lightdm/+bug/854261 before setting a timeout
user-session=Lubuntu
greeter-session=lightdm-gtk-greeter

A:

This solution worked for me. The link (at the bottom) is dead but I got a cached version.
$ sudo nano /etc/lightdm/lightdm.conf

Add the following lines replacing myusername with your user:
[Seat:*]
pam-service=lightdm
pam-autologin-service=lightdm-autologin
autologin-user=myusername
autologin-user-timeout=0

To check use:
$ /usr/sbin/lightdm --show-config

Source: http://www.neatlittleinsights.com/htdocs/lubuntu_16.04_autologin.html

A:

Lubuntu uses LightDM for login, You need to modify the config file. You need to check, where are they:
/usr/sbin/lightdm --show-config

You will see the proper config files under the "Sources" paragraph.
Then you can edit the first one with root privileges (eg. for Ubuntu 17 this is):
sudo nano /usr/share/lightdm/lightdm.conf.d/20-lubuntu.conf

Add your username to the autologin-user line (or add the line if it is not defined). It will look like:
[Seat:*]
user-session=lubuntu
autologin-user=myusername
autologin-user-timeout=0

Save and check again with
/usr/sbin/lightdm --show-config

