looks like your lightdm died, Daltong. Had exactly same thing. That's about as far as I got myself a month ago
Maybe some Xorg driver is needed or some other magic. P.S. Also, for me, despite all my efforts nouveau still was present and probed for some device or other during boot, and I'm very certain I've edited grub allright. I then created a blacklist.conf to "off nouveau for good" but that did not solve my weird lightdm issues. -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To post to this group, send email to qubes-users@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/56eca00d-8fdf-4807-8ca0-4dfccf57e1c1%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.