[Bug 1261898] [NEW] pci_devices does not terminate at computer shutdown

[welfare31]

Public bug reported:

I have a clean install of 13.10 using the 3.12 kernel. When I shutdown
or restart the process hangs. I press a key and I see:

**Killing all remaining processes .......      [fail]** (fail is in red)
This is followed by more info (sometime referring to nm-dispatcher or modem and always ends:

mount:/ is busy

will now restart (or halt as the case may be)
Then nothing else happens the process hangs there, power on my PC (Dell 5150 desktop) remains on and I need to do a "hard reset" to turn my PC off.

I have seen relatively similar problems but none match mine exactly, I
have attempted using:

sudo shutdown -P now

or

sudo shutdown -H now

or

sudo reboot

But the results are the same.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: pm-utils 1.4.1-12ubuntu1
Uname: Linux 3.12.0-031200-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.12.5-0ubuntu2.1
Architecture: amd64
Date: Tue Dec 17 20:05:14 2013
ExecutablePath: /usr/lib/pm-utils/power.d/pci_devices
InstallationDate: Installed on 2013-10-19 (59 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
InterpreterPath: /bin/dash
MarkForUpload: True
OmitPids: 1097 879 734 2978 729 712 697 3047 811 717 734 2978 729 712 697 3047 811 717
PackageArchitecture: all
ProcCmdline: /bin/sh /usr/lib/pm-utils/power.d/pci_devices false
ProcEnviron:
 LC_COLLATE=C
 PATH=(custom, no user)
SourcePackage: pm-utils
Title: pci_devices does not terminate at computer shutdown
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: pm-utils (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug saucy shutdown-hang

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Title:
  pci_devices does not terminate at computer shutdown

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