I'm having the same problem on a Lenovo T430. If I boot the laptop on its own, it boots fine. If it's on the dock, which has two external monitors attached to it, it boots until it gets to the Ubuntu splash screen with the spinning propeller tips and never passes that point. I've left it on overnight and it never completes booting to the desktop.
If I boot it on it's own, sign in to the desktop, and then dock it, both external monitors are recognized and opening/closing the lid toggles the multiple pane layouts as expected. Like Tim, I can get it to fully boot on the dock with multiple monitors by updating /etc/default/grub to GRUB_CMDLINE_LINUX_DEFAULT="". -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1872159 Title: booting with splash hangs when external monitors are connected (pure intel 8th gen laptop) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/1872159/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
