[Bug 705150] Re: Hang trying to enter single-user mode (runlevel 1)

[john]

I'm seeing the same issue with ubuntu 12.04 and 14.04, cant get to a
command prompt to perform single-user maintenance.

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Title:
  Hang trying to enter single-user mode (runlevel 1)

Status in “plymouth” package in Ubuntu:
  New

Bug description:
  Binary package hint: upstart

  "telinit 1" causes a hang.  The root shell prompt never appears.  The
  screen is left showing the boot/shutdown splash.

  To reproduce:
  1. Log into a Gnome Classic (no acceleration) session.
      Make sure root has a valid password (run 'sudo passwd root')
  2. Ctl-Alt-F1 to switch to a VT (in VirtualBox, press HostKey+F1)
  3. In the VT, log in as root
  4. telinit 1

  Results:
  The purple "Ubuntu" boot/shutdown splash screen appears, the dots advance for a while, then stop with all dots white.
  Nothing else happens.

  I suspect that the upstart scripts are forgetting to remove the
  shutdown spash screen, and so I can't see the console prompt (just a
  guess).

  NOTE: I'm running in a VirtualBox VM.    I need to enter single-user
  mode to remount the root fs read-only, to prepare to run "zerofree"
  (which zeroes unused blocks, allowing the VM's disk image file to be
  compressed during backups...)

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: upstart 0.6.7-4
  ProcVersionSignature: Ubuntu 2.6.37-12.26-generic 2.6.37
  Uname: Linux 2.6.37-12-generic x86_64
  Architecture: amd64
  Date: Wed Jan 19 13:49:50 2011
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20101202)
  ProcEnviron:
   LANGUAGE=en_US.UTF-8:en
   LANG=en_US.UTF-8
   LC_MESSAGES=en_AG.utf8
   SHELL=/bin/bash
  SourcePackage: upstart

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