[Bug 1170911] Re: umount error messages during shutdown

[Thomas U.]

Hi!

My main problem is that my shutdown hangs indefinitely. I came to this
bug report via this forum thread:
ubuntuforums.org/showthread.php?t=2140112  (if I'm not entirely wrong
I've seen other "shutdown failure on 13.04" threads point to this bug
report here).

In any case, my main bug is that the shutdown doesn't power of my
machine. I am not conviced that this is really related to the unmount
error messages. But since RichB also reported his problems here, I
thought I'd add to it as well. I susptect that many of the "affected
users" are actually  affected by the shutdown bug. If you google for
"ubuntu 13.04 shutdown" you can find several people that seem to suffer
from this issue. I am happy to open another bug report by it, since I am
not confinced the two are related   (Especially since the initial report
doesn't have shutdown problems).

I have three machines that have clean 13.04 installs. Two laptops, one
desktop. All of them *sometimes* fail to shut down cleanly. It doesn't
happen all the time, but about 75% of the shutdowns just "hang" without
powering down the machine. I have not been able to pin down what happens
the failed shutdowns.

I can think of the following similarities between the 3 machines:

* all run proprietary nvidia drivers (version 313)
* on all of them I deactivated encrypted swap (on the desktop I deactivated swap alltogether)
* all of them have encrypted filesystems that are mouned via LUKS and libpam-mount


In any case, this error is VERY annoying. Among things it stops me from remotely starting/shutting down/rebooting my machines.

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https://bugs.launchpad.net/bugs/1170911

Title:
  umount error messages during shutdown

Status in “sysvinit” package in Ubuntu:
  Confirmed

Bug description:
  When I halt Ubuntu ugly (but probably harmless) error messages about
  unmounting several filesystems (including the root) are displayed or
  the screen.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: mountall 2.48build1
  ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
  Uname: Linux 3.8.0-19-generic i686
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: i386
  Date: Sat Apr 20 11:08:07 2013
  InstallationDate: Installed on 2013-02-05 (73 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha i386 (20130205)
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: mountall
  UpgradeStatus: No upgrade log present (probably fresh install)

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