I found a related post here: https://www.linuxliteos.com/forums/suggestions-and-feedback/possible- kernel-problems-with-ubuntu-18-04-and-latest- kernel/15/?PHPSESSID=sgfuljc5afl0kgfg1lsj4oltg1
My Toshiba laptop does not have any power settings in the BIOS, so I tried adding "acpi=off noapic" to the kernel boot parameters in grub 2. That fixed the problem. I'll proceed with the bisect, but I'm guessing it will come down to this. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1776616 Title: Ubuntu 18.04 getting stuck at "Starting Reboot" and "Starting Power- Off" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1776616/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs