If you're looking for a workaround, the current default Ubuntu 16.04.5 kernel doesn't have this bug, and doesn't require PPAs.
apt-get install --install-recommends linux-generic-hwe-16.04 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1803929 Title: Summary: Kernel bug (unhandled paging request) on "udisksctl power- off" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1803929/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs