I'm pretty sure I figured this out. The HWE upgrade process fails to install libwayland-egl1-mesa-lts-xenial. If I do so from TTY (or recovery mode) and reboot all seems well!
** Summary changed: - Reboot after Ubuntu GNOME Trusty HWE upgrade freezes @ Restoring resolver state + Ubuntu GNOME Trusty HWE upgrade fails to install libwayland-egl1-mesa-lts-xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1610434 Title: Ubuntu GNOME Trusty HWE upgrade fails to install libwayland-egl1-mesa- lts-xenial To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-gnome/+bug/1610434/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs