A little bit of debugging and investigating confirm what is in log above: libmutter cannot get a monitor and crashes here: https://github.com/GNOME/mutter/blob/master/src/backends/meta-backend.c#L128-L133
primary = meta_monitor_manager_get_primary_logical_monitor (monitor_manager); meta_backend_warp_pointer (backend, primary->rect.x + primary->rect.width / 2, primary->rect.y + primary->rect.height / 2); because 'primary' is not a valid pointer. So, 1. This should be reported to gnome/mutter developers, so they check all their pointers and terminate in clean way with meta_fatal("failed to get primary monitor"); or something like that. 2. We have to understand, why libmutter fails to get primary logical monitor. Does Xorg need some permissions? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1672033 Title: Xorg does not work in rootless mode on nvidia proprietary drivers (GNOME) To manage notifications about this bug go to: https://bugs.launchpad.net/nvidia-drivers-ubuntu/+bug/1672033/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs