Things appear to have changed from 14.04. Then, my last desktop environment was remembered and I did not have to select one each time from the greeter login. One user defaulted to cinnamon, another to ubuntu (unity).
With 15.10, the greeter login ALWAYS defaults to ubuntu. /usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf contains:
and this always appears as the default selection, even though $HOME/.dmrc for a user contains:
I suppose I can make the default ALWAYS e.g. cinnamon by changing 50-ubuntu.conf, but that still doesn't give me a per-user default. It seems like the current implementation renders $HOME/.dmrc useless.
Is there a way to set a per-user default for desktop environment with 15.10?