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[Bug 1372006] [NEW] pci_devices does not terminate at computer shutdown


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Shutdown does not halt on my Dell Precision 390
the shutdown sequence prints on the console:

mount: / is busy

/etc/init.d/sendsigs does not terminate systemd-udevd

Only solution: enable and use ALT-SYSREQ REISUB (to keep the root fs

I tried to change GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub  (+

GRUB_CMDLINE_LINUX_DEFAULT="quiet nosplash reboot=pci"  or
GRUB_CMDLINE_LINUX_DEFAULT="quiet nosplash reboot=bios" or
GRUB_CMDLINE_LINUX_DEFAULT="quiet nosplash acpi=force

Shutdown still hangs with 'mount: / is busy'
I even updated the BIOS from 2.0.4 to 2.06, no luck.

When booting from a Knoppix 6.0.1 CD with a 2.6 kernel,  shutdown works
and halts the system to poweroff state.

Any ideas?


ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: pm-utils 1.4.1-13ubuntu0.1
ProcVersionSignature: Ubuntu 3.13.0-35.62-generic
Uname: Linux 3.13.0-35-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.4
Architecture: amd64
Date: Sun Sep 21 02:58:10 2014
ExecutablePath: /usr/lib/pm-utils/power.d/pci_devices
InstallationDate: Installed on 2014-09-19 (1 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
InterpreterPath: /bin/dash
OmitPids: 11761 308 302 11767 723 714 11890 11767 723 714 11890
PackageArchitecture: all
ProcCmdline: /bin/sh /usr/lib/pm-utils/power.d/pci_devices false
 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: linux (Ubuntu)
     Importance: Low
         Status: Incomplete

** Tags: amd64 apport-bug shutdown-hang trusty
pci_devices does not terminate at computer shutdown
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