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["Simon P." <1552906@xxxxxxxxxxxxxxxxxx>]

I was not able to get information via the linux-crashdump tool, but I
added the kern.log file to this comment with information starting from
the system start until closing the lid. After closing the lid there was
no more new information in the kern.log file and I had to perform a hard
reboot.

** Attachment added: "kern.log"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1552906/+attachment/4593598/+files/kern.log

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https://bugs.launchpad.net/bugs/1552906

Title:
  System freezes after closing lid on Thinkpad X260

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  My current Ubuntu version is 14.04.4 but I also tried 15.10.
  Regardless of the Ubuntu version there is a serious problem with my new Thinkpad X260 when it is in battery mode and I close and reopen the lid. The problem is not affecting the suspend mode as it still occurs when this mode is disabled.

  what I expect to happen: After closing the lid the screen goes off.
  When I open the lid again, screen goes on and I can use the laptop.

  what happens every time: When I close the lid the screen turns black.
  When I open the lid again the screen displays the system but it is
  frozen and does not react on input.

  Interestingly I can not reproduce this problem when the laptop is connected to an AC power source.
  ---
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  simon      1437 F.... pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=76bcd0ad-fc42-4d1a-8089-0f10d23df682
  InstallationDate: Installed on 2016-03-03 (0 days ago)
  InstallationMedia: Ubuntu 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160217.1)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 004: ID 138a:0017 Validity Sensors, Inc.
   Bus 001 Device 003: ID 04ca:7058 Lite-On Technology Corp.
   Bus 001 Device 005: ID 8087:0a2b Intel Corp.
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: LENOVO 20F5S0EU00
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-27-generic.efi.signed root=UUID=fa7f6b64-3d57-43ce-a52b-5323c46dd0ca ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 4.2.0-27.32~14.04.1-generic 4.2.8-ckt1
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-27-generic N/A
   linux-backports-modules-4.2.0-27-generic  N/A
   linux-firmware                            1.127.20
  Tags:  trusty
  Uname: Linux 4.2.0-27-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 01/25/2016
  dmi.bios.vendor: LENOVO
  dmi.bios.version: R02ET44W (1.17 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20F5S0EU00
  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: None
  dmi.modalias: dmi:bvnLENOVO:bvrR02ET44W(1.17):bd01/25/2016:svnLENOVO:pn20F5S0EU00:pvrThinkPadX260:rvnLENOVO:rn20F5S0EU00:rvrNotDefined:cvnLENOVO:ct10:cvrNone:
  dmi.product.name: 20F5S0EU00
  dmi.product.version: ThinkPad X260
  dmi.sys.vendor: LENOVO

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