pci_devices does not terminate at computer shutdown

[welfare31]

I have a clean install of 13.10 using the 3.11 kernel. I have previously reported this bug with the 2.12 kernel (Bug #1261898), when I used apportcollect it instructed me to use standard Kernel and re-report if bug persists; it does...

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
ProcVersionSignature: Ubuntu 3.11.0-14.21-generic 3.11.7
Uname: Linux 3.11.0-14-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
Date: Mon Dec 23 14:15:34 2013
ExecutablePath: /usr/lib/pm-utils/power.d/pci_devices
InstallationDate: Installed on 2013-10-19 (64 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
InterpreterPath: /bin/dash
MarkForUpload: True
OmitPids: 1093 4435 863 731 4441 726 691 667 4514 759 4473 710 731 4441 726 691 667 4514 759 710
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)

[Nikolay Morozov (nmorozov)]

got the same with trusty 64bit

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Nikolay Morozov (nmorozov)]

DELL D430 laptop

[Nikolay Morozov (nmorozov)]

if have discover what causes my problem
you can look my bug
https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1304532
try to check if your bug have the same or not

[ahau (saerdnah)]

I got similar problems (shutdown hanging, mount:/ is busy) with Ubuntu 14.04 on a Dell Precision WorkStation 390,
after boot ing dmesg displayed a kernel 'Oops: 0000 [#1] SMP', a few lines below the 'i82975x_edac' is listed:

[ 7.951808] Oops: 0000 [#1] SMP
[ 7.951943] Modules linked in: i82975x_edac(+) snd edac_core serio_raw soundcore mac_hid hid_generic usbhid hid ahci firewire_ohci libahci firewire_core crc_itu_t floppy tg3 ptp pps_core
[ 7.952012] CPU: 0 PID: 309 Comm: systemd-udevd Not tainted 3.13.0-36-generic #63-Ubuntu
[ 7.952012] Hardware name: Dell Inc. Precision WorkStation 390 /0DN075, BIOS 2.6.0 05/19/2008
[ 7.952012] task: ffff88007b988000 ti: ffff8800796e8000 task.ti: ffff8800796e8000
[ 7.952012] RIP: 0010:[<ffffffffa00c97ee>] [<ffffffffa00c97ee>] edac_create_sysfs_mci_device+0x23e/0x550 [edac_core]

I blacklisted the i82975x_edac module and voila, the machine shuts down without problems.

See also my bug:

https://bugs.launchpad.net/ubuntu/+source/pm-utils/+bug/1372006

[penalvch (penalvch)]

welfare31, thank you for reporting this bug to Ubuntu. Saucy reached EOL on July 17, 2014.
See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases

Is this reproducible in the latest release of Ubuntu via http://cdimage.ubuntu.com/daily-live/current/ ?

If so, please execute the following via a terminal in order for the necessary debugging information to be attached:
apport-collect 1263704

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]