the issue is rather a live CD or casper one, it should write an /etc/lightdm/lightdm.conf (that will be the location of the conffile in the next update) with default-user-timeout=0 it seems
the issue is rather a live CD or casper one, it should write an /etc/lightdm/ lightdm. conf (that will be the location of the conffile in the next update) with default- user-timeout= 0 it seems