Well, that answers something I've wondered: this DOES affect the T480 (full Thunderbolt) chipset. I've seen it on T570; I've seen it reported on T470; and I've also seen it on T440s. Again, this is one of FOUR serious bugs that I've seen pop up since the Ubuntu updates starting around September 12 or 13. (See the other 3 bug numbers in post 45 above.)
Note that the subsequent update (around Sept 22 or 23) included grub updates AND *nvidia driver* updates. These issues seem to be inter- related perhaps.... I really hope that this gets cleaned up soon; it's been about 2 weeks already that I've had a machine down and another seriously affected. -- 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: Boot animation never finishes when external monitors (or just more than one) are connected To manage notifications about this bug go to: https://bugs.launchpad.net/plymouth/+bug/1872159/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs