[Trisquel-users] Re : disabling autologin at startup

[magicbanana]

According to its documentation, GDM can be configured through a file  
/etc/gdm/custom.conf. You need administrator's permissions to create or edit  
this file (here with GEdit):
$ gksu gedit /etc/gdm/custom.conf
You wan the file to contain that:
[daemon]
AutomaticLoginEnable=false