for solving this problem i was making Live-Cds the last three weeks day n night
and i tried every tip and configuration-option in remastersys :-p !
But now i think i found the "problem" and my last 2 Live-Cd making with remastersys
has no login-prompt anymore and starts with auto-login!
First let me tell you that you have to use the DISTRO-MODE and NOT the BACKUP-MODE!
In Backup-Mode of Remastersys always your last user and password is saved!
And it really helps if you had a clean system-Install with Auto-login choosen first and NO encryption of your homefolder!
It doesn t matter if you have make password-prompt later on- but if you make your live-cd make Auto-Login ON again!
And now comes the "Trick": In the Gdm-Login-Manager-Preferences you can choose timebased Auto-Login under the normal Auto-Login option! THIS YOU HAVE TO MAKE ALWAYS ON TOO!!!
for example: 10 seconds or something- but it has to be activated!
For me now it works and every Live-Cd i make with Remastersys is coming with auto-login!
I tried this on Linux Mint 13 but this is based on Ubuntu 12.04 and so it has to work on other Ubuntu-Machines that using GDM/MDM-Login too!?!
Don't change anything in Users/groups-GUI!!!
I hope somebody will help this! I was going really mad about not finding out how it works!
And at the end i was thinking: ok, so everybody has to use the login as "custom" without password- but without this prompt it makes more sence!