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[WishMaster <1315316@xxxxxxxxxxxxxxxxxx>]

The behavior is still the same after I updated the BIOS (which was quite
a pain, by the way because the Lenovo BIOS update ISO only works on CDs
and cannot be booted from USB drives. Thus I had to install Windows to
install the update and then install Ubuntu again).

Here is the output that you wanted to have:
GJET75WW (2.25 )
03/28/2014

As I said, nothing has changed. Sometimes (not always) when going to suspsend, the screen goes dark, the LEDs indicate suspend mode and the cpu seems to be working so that the device gets very hot very fast. This is why I think the bug should have a higher importance level than "Low" because it can lead to the device overheating.
It is not possible to recover the system from that state. Holding the power button until the device powers off seems to be the only way to get out of it.

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https://bugs.launchpad.net/bugs/1315316

Title:
  [Lenovo ThinkPad T440s] suspend/resume failing

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Sometimes, the system will appear to go to sleep mode (i.e. the LEDs
  will start indicating sleep mode). However, it appears to not suspend
  completely and the system produces a lot of heat while it is in this
  state which is rather dangerous if you put it in your sleeve and leave
  it there the system will overheat quickly. The problem exists both
  with the default Ubuntu and the mainline 3.14 kernel.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.46 [modified: boot/vmlinuz-3.13.0-24-generic]
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  philipp    1945 F.... pulseaudio
   /dev/snd/controlC1:  philipp    1945 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Fri May  2 11:53:25 2014
  HibernationDevice: RESUME=UUID=33297c91-85ea-4c06-a780-c68f69e46042
  InstallationDate: Installed on 2014-04-30 (1 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: LENOVO 20ARS0BH00
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic.efi.signed root=UUID=108e8269-9378-4695-84ff-e001a54e9e97 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-24-generic N/A
   linux-backports-modules-3.13.0-24-generic  N/A
   linux-firmware                             1.127
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 02/10/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GJET71WW (2.21 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20ARS0BH00
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrGJET71WW(2.21):bd02/10/2014:svnLENOVO:pn20ARS0BH00:pvrThinkPadT440s:rvnLENOVO:rn20ARS0BH00:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20ARS0BH00
  dmi.product.version: ThinkPad T440s
  dmi.sys.vendor: LENOVO

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