I had the same problem, and also solved it with uncommenting WaylandEnable=false in /etc/gdm3/custom.conf.
I don't even have nVidia..! I'm using my CPU's graphics controller and intel graphics: ~ lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller (rev 09) ~ modinfo i915 filename: /lib/modules/4.18.0-15-generic/kernel/drivers/gpu/drm/i915/i915.ko license: GPL and additional rights description: Intel Graphics author: Intel Corporation -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1796614 Title: [nouveau] Ubuntu 18.10 boots to a blank screen with a blinking cursor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1796614/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
