lxdm doesn’t work with mate. Once you select mate and try to login nothing happens. When I switch to a text console and do ps -ef | grep session it seems that there is no session running. wdm logs in fine, but sound does not work and the network applet appears as if there’s not network, but actually network is working.
gdm works fine and the other services work as well. I didn’t test lightdm but I don’t like it because I feel it is slow.