I've just updated the bios: N10ET38W (1.17 ) 08/20/2015
I don't know if I will be able to reproduce the bug again. It happened suddenly while using some lightweight software (specifically Anki http://ankisrs.net/). As described above I could only move the cursor with the physical usb mouse, clicking, the touchpad and the keyboard were unresponsive. After turning off and on the machine and looking at the logs I foun that stange sequences of NUL characters. -- 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/1507338 Title: System freeze with long strings of NUL characters (^@) in the logs Status in linux package in Ubuntu: Incomplete Bug description: Experienced a system freeze. It was not possible to use the keyboard or the touchpad, it was possible to move the cursor using an USB mouse attached, but clicking had no effect. The strange thing is that at the time of the freeze /var/log/syslog and /var/log/kern.log displayed long strings of NUL bytes (^@). --- ApportVersion: 2.19.1-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: brtdra 1818 F.... pulseaudio /dev/snd/controlC0: brtdra 1818 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 15.10 HibernationDevice: RESUME=UUID=7c657863-dc0e-432f-9b9d-9bc4395cdf1c InstallationDate: Installed on 2015-08-22 (57 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) MachineType: LENOVO 20CMCTO1WW Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-16-generic.efi.signed root=UUID=da47e804-2239-47b1-a6d1-493ccca12588 ro noprompt persistent quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3 RelatedPackageVersions: linux-restricted-modules-4.2.0-16-generic N/A linux-backports-modules-4.2.0-16-generic N/A linux-firmware 1.149 Tags: wily UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' Uname: Linux 4.2.0-16-generic x86_64 UpgradeStatus: Upgraded to wily on 2015-10-16 (2 days ago) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 06/19/2015 dmi.bios.vendor: LENOVO dmi.bios.version: N10ET36W (1.15 ) dmi.board.asset.tag: Not Available dmi.board.name: 20CMCTO1WW dmi.board.vendor: LENOVO dmi.board.version: SDK0K11826 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN10ET36W(1.15):bd06/19/2015:svnLENOVO:pn20CMCTO1WW:pvrThinkPadX250:rvnLENOVO:rn20CMCTO1WW:rvrSDK0K11826WIN:cvnLENOVO:ct10:cvrNone: dmi.product.name: 20CMCTO1WW dmi.product.version: ThinkPad X250 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1507338/+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
