For some reason (I cannot remember) my root filesystem node "/" had the owner set to my user. I guess this used to work for some time. And some change in mutter or related packages made this break.
Changed back owner to root.root and system is now starting properly. Don't know what to say about the system failing in such an obscure way. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1806257 Title: gnome-shell excessive logging cannot bind to x11-unix To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1806257/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs