Password at Boot time

When installing lubuntu, I forgot to uncheck the box so that it would boot up without me having to enter a password. Is there some way I can remove this requirement without redoing the installation?

Sorry, it was the other way around: I forgot to check the tick box labelled “Log in automatically without asking for the password”
Same question; can I change this without starting from scratch and re-installing?

You can try:

sudo mkdir -p /usr/lib/sddm/sddm.conf.d/
VISUAL=featherpad sudoedit /usr/lib/sddm/sddm.conf.d/autologin

And add the content

User=USERNAME              # <== Replace USERNAME with your user name e.g. fausto (the name shown in the terminal)

and save the file.

I did not test it.

Some links:

Thanks I found a similar suggestion here

I tried it using admin and now my system won’t complete the bootup. I guess I’ll just re-install…

If there is no user admin, why should it work if you set User=admin?

Instead of reinstalling, you should try to fix your error:
Enter your username and type the password (no * are shown).
After login, execute

sudo nano /etc/sddm.conf

and delete the wrong line. After that simply reboot to start the system again.

Sorry, I did not know about CTRL+ALT+F5 , which I take it gets me a command line/terminal shell
That’s the trouble with learning Linux from the internet. The pages are often not relevant or out of date or both AND I often don’t know the right question to ask or even understand the language when used in a Linux context.

I just thought - how can I fix my error if it won’t boot up?
The re-install is done. Thanks anyhow.

If you had created a user with password not configure SDDM.
If you had created a user without password is possible configure SDDM.

The password configuration not is in SDDM.