Hi, I'm in the same situation and since I'm using sysvinit I'd like to have more explanations about this fix, especially what mario asked about it: "So from now is not possible to use X without systemd?"
I can see a newest version in sid (2:1.17.3-2) that has libpam-systemd as recommended package, I don't get how can be possible just recommend it when the X session is not usable at all, you can't even switch on a tty and reset the machine is not funny. So, can I still use whatever init system I like? How? Because at the moment it seems Debian is acting a subtle obligation to make the switch. Cheers.