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[José Jorge Enríquez Rodríguez <josejorge@xxxxxxxxx>]

Today I tried the Xubuntu Xenial daily image and again (live usb), the system was not able to shut down.
In the live session, selected the Xubuntu menu, shut down, when Xubuntu image appeared pressed [F1] to be able to see system messages, I got these messages at the end:

[OK] Stopped target Local File System.
         Unmounting /run/user/999...
         Unmounting cdrom.mount...
         Unmounting /rofs...
         Unmounting /sys/kernel/debug/tracing...
         Unmounting /tmp...
[FAILED] Failed unmounting cdrom.mount.
cdrom.mount
[OK] Unmounted /sys/kernel/debug/tracing.
[OK] Unmounted /run/user/999.
[OK] Unmounted /rofs.
[OK] Unmounted /tmp.
[OK] Reached target Unmount All Filesystems.
[OK] Stopped target Local File Systems (Pre).
[OK] Stopped Create Static Device Nodes in /dev.
[OK] Stopped Remount Root and Kernel File Systems.
[OK] Reached target Shutdown.
[202.959599] reboot: Power down

And the system hangs there, it does not complete the shut down. It does
not respond to any keypress, I have to keep the power button pressed to
get the computer shut down.

** Changed in: linux (Ubuntu)
       Status: Invalid => New

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https://bugs.launchpad.net/bugs/1552985

Title:
  [Dell Inspiron 14 3000 Series] System hangs on poweroff

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Xubuntu 14.04.4 LTS
  Linux 3.13.0-79-generic #123-Ubuntu SMP Fri Feb 19 14:27:58 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

  When shutting down the system, it gets stuck on the Xubuntu splash
  screen. I have to press the power button for a while to have it shut
  down.

  This is a dual boot system: Windows 10 and Xubuntu 14.04. I updated BIOS version to A10 a couple of days ago. It hanged when trying to shut down from both Windows and Xubuntu.
  After installing the firmware update from http://www.dell.com/support/article/mx/es/mxbsdt1/SLN300281/EN, the computer shuts down correctly from Windows, but still gets stuck when trying to shut down from Xubuntu, no matter if using the "Shutdown" button or running "shutdown -h now" or "poweroff" from a terminal.

  I found a similar bug here:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1341925?comments=all,
  but the solution mentioned there did not work for me, also, I don't
  have any problems when rebooting the computer, just when trying to
  shut down.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-79-generic 3.13.0-79.123
  ProcVersionSignature: Ubuntu 3.13.0-79.123-generic 3.13.11-ckt33
  Uname: Linux 3.13.0-79-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  jorge      2347 F.... pulseaudio
   /dev/snd/controlC1:  jorge      2347 F.... pulseaudio
  CurrentDesktop: XFCE
  Date: Thu Mar  3 18:43:20 2016
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-11-18 (471 days ago)
  InstallationMedia: Xubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140723)
  MachineType: Dell Inc. Inspiron 3442
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-79-generic.efi.signed root=UUID=bc5b1ae8-a10c-4705-afc7-3cf3c2538883 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-79-generic N/A
   linux-backports-modules-3.13.0-79-generic  N/A
   linux-firmware                             1.127.20
  SourcePackage: linux
  StagingDrivers: rts5139
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/03/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A10
  dmi.board.name: 0260GN
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A10
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: Not Specified
  dmi.modalias: dmi:bvnDellInc.:bvrA10:bd11/03/2015:svnDellInc.:pnInspiron3442:pvrNotSpecified:rvnDellInc.:rn0260GN:rvrA10:cvnDellInc.:ct8:cvrNotSpecified:
  dmi.product.name: Inspiron 3442
  dmi.product.version: Not Specified
  dmi.sys.vendor: Dell Inc.

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