sudo update-alternatives --config x-session-manager

If it does that is it, just select default..

You've nailed it, smoki!
That's it.

Thanks a lot,
m

I have openbox, LXDE and Mate and LXDE is always the default one.
I've already set autologin in slim.conf but there is nowhere a place to set Mate as a default.

How to do it, please?

m

Hm, try maybe in same /etc/slim.conf to put sessions line, in order you want of course:

sessions mate,lxde,openbox

Ah, that is not there anymore it seems maybe work mayb not... nothing, does this allows you to select default:

sudo update-alternatives --config x-session-manager

If it does that is it, just select default..

How to do it, please?

m