Same error here using a Lenovo Yoga X1 3rd with fully updated Ubuntu 20.04 (focal). I can confirm the problem is not fixed yet.
Removing "quiet splash" seems to work and also observed (when I was trying to debug this) that pressing Esc key in early boot stages to avoid splash screen and see the boot logs also workarounds this incredibly annoying bug too. -- 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
