Dear Maintainer, I installed gdm3 package and started gdm3 service, but service seems to received SIGTRAP signal. I checked all what I could and came to the conclusion that gdm fails when no session files are available. There was no log messages at all from gdm3 and other services related to this bug. Installation of gnome-session solves the issue. I excepted that GDM starts when no session files available, but just say to user that no DE installed. Best regards, George Bartolomey