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[ramgorur <1261886@xxxxxxxxxxxxxxxxxx>]

hi, tested with http://cdimage.ubuntu.com/daily-live/current/, the
shutdown-reboot loop still persists. Moreover, after the shutdown-reboot
loop, keyboard does not work on the login screen, I need to do a suspend
and a wakeup then the keyboard responds.

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https://bugs.launchpad.net/bugs/1261886

Title:
  [Lenovo ThinkPad S431] Boots up after shutdown

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  I first removed the ~/.Xauthority file it worked fine for the next
  two-three shutdowns, then it started again. Then I added acpi=noirq
  switch in the kernel parameter and seemed to be fixed for couple of
  weeks, then it started again. Moreover, after acpi=noirq, the
  bluetooth has stopped working. Moreover, I also tried to remove the
  module ehci_hcd by this command --

  rmmod ehci_hcd

  but I failed to make this work.

  details can be found here --
  http://www.thinkwiki.org/wiki/How_to_make_ACPI_work#Machine_reboots_after_shutting_down

  This is also (most probably) similar to this Bug 1230359

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: linux-image-3.11.0-14-generic 3.11.0-14.21
  ProcVersionSignature: Ubuntu 3.11.0-14.21-generic 3.11.7
  Uname: Linux 3.11.0-14-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  khaled     2676 F.... pulseaudio
  Date: Tue Dec 17 15:03:26 2013
  HibernationDevice: RESUME=UUID=febf0c2e-7d67-4ccf-b968-a069097b696a
  InstallationDate: Installed on 2013-11-26 (20 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: LENOVO 20AXCTO1WW
  MarkForUpload: True
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-14-generic.efi.signed root=UUID=9746bcf4-275a-4e5a-8ddd-8efec0a455f5 ro
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-14-generic N/A
   linux-backports-modules-3.11.0-14-generic  N/A
   linux-firmware                             1.116
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/10/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: HFET30WW (1.07 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20AXCTO1WW
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrHFET30WW(1.07):bd07/10/2013:svnLENOVO:pn20AXCTO1WW:pvrThinkPadS3-S431:rvnLENOVO:rn20AXCTO1WW:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20AXCTO1WW
  dmi.product.version: ThinkPad S3-S431
  dmi.sys.vendor: LENOVO

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