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 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1552906/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
