[Bug 1729437] Re: Ubuntu 17.10 hangs on reboot after installation

[LinuxUser]

** Also affects: plymouth
   Importance: Undecided
       Status: New

** Also affects: plymouth (Ubuntu)
   Importance: Undecided
       Status: New

** No longer affects: plymouth

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https://bugs.launchpad.net/bugs/1729437

Title:
  Ubuntu 17.10 hangs on reboot after installation

Status in Ubuntu:
  Confirmed
Status in plymouth package in Ubuntu:
  New

Bug description:
  After installing ubuntu 17.10 desktop a window asking for a reboot opens.
  After selecting the reboot I get the following error message from systemd: 'A start job is running for Hold until boot process finishes up (21s / no limit)'
  The system hangs and continues to display this error message.
  As far as I can tell this message comes up during the shutdown part of the reboot.

  I used 'ubuntu-17.10-desktop-amd64.iso' as installation image on a usb
  drive, I started the installer by selecting 'Try Ubuntu without
  installing' in the boot menu and clicking the installer icon after the
  live systems boot up.

  Happily I also found a workaround. Before booting the live system I
  changed some boot parameters with grub from 'quiet splash' to
  'noplymouth' and then the installation worked and a proper reboot
  after installation was possible.

  To make things clearer I have attachted a screenshot of the error message.
  I encountered this bug on Lenovo ThinkPad T470 with an nvme SSD.

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