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[Jaak Ristioja <1412671@xxxxxxxxxxxxxxxxxx>]

I tried several reboots and several shutdowns all of which succeeded.

The issues started on January 20, after the system updates on January
19. I don't know how the Ubuntu startup system (Upstart) works, but my
guess is that one of those updates caused the race, and a subsequent
update caused the race to disappear. Maybe some of those updates cause
upstart service/task dependencies to be recalculated/cached, and this
failed on January 19 (causing the unbootable system). A subsequent
update may have attempted the same and succeeded, fixing the boot.

Have we eliminated this possibilty so that the resolution to mark this
bug report as "Fix Released" is valid?

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https://bugs.launchpad.net/bugs/1412671

Title:
  [14.04] Boot stuck in "Starting configuring network devices" after
  upgrade

Status in linux package in Ubuntu:
  Fix Released

Bug description:
  One of these upgrades yesterday resulted in an unbootable system:

  2015-01-19 20:32:45 upgrade libc-dev-bin:amd64 2.19-0ubuntu6.4 2.19-0ubuntu6.5
  2015-01-19 20:32:47 upgrade libc6-dev:amd64 2.19-0ubuntu6.4 2.19-0ubuntu6.5
  2015-01-19 20:32:48 upgrade libc6-dbg:amd64 2.19-0ubuntu6.4 2.19-0ubuntu6.5
  2015-01-19 20:32:50 upgrade libc-bin:amd64 2.19-0ubuntu6.4 2.19-0ubuntu6.5
  2015-01-19 20:32:53 upgrade libc6:i386 2.19-0ubuntu6.4 2.19-0ubuntu6.5
  2015-01-19 20:32:56 upgrade libc6:amd64 2.19-0ubuntu6.4 2.19-0ubuntu6.5
  2015-01-19 20:33:05 upgrade libclutter-gtk-1.0-0:amd64 1.4.4-3ubuntu2 1.4.4-3ubuntu2.2
  2015-01-19 20:33:06 upgrade libssh-4:amd64 0.6.1-0ubuntu3 0.6.1-0ubuntu3.1
  2015-01-19 20:33:07 upgrade multiarch-support:amd64 2.19-0ubuntu6.4 2.19-0ubuntu6.5
  2015-01-19 20:33:10 upgrade libcgmanager0:i386 0.24-0ubuntu7.1 0.24-0ubuntu7.2
  2015-01-19 20:33:11 upgrade libcgmanager0:amd64 0.24-0ubuntu7.1 0.24-0ubuntu7.2
  2015-01-19 20:33:12 upgrade linux-firmware:all 1.127.10 1.127.11

  I'm unable to debug this any further because the desktop system is in
  another part of the country. I got the error report by a phone call by
  a non-technical non-English-speaking user, on whos machine I installed
  Kubuntu. After a while I got him to boot into the recovery prompt and
  enable me SSH access so I could downgrade these packages. After
  downgrading the system restarted well and came up.

  The user reported that the boot process was stuck at a "Starting
  configuring network connections" prompt or something. I'm not entirely
  sure, but I might have heard him muttering something about some cgroup
  messages.

  Anyway I still have SSH access, but I can't do on-site debugging until
  February 7 or restart via SSH and risk having to contact the user to
  recover from a broken boot.

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