Dario Bertero, thank you for reporting this and helping make Ubuntu better.
As per http://support.lenovo.com/us/en/products/laptops-and- netbooks/thinkpad-x-series-laptops/thinkpad-x250 an update to your computer's buggy and outdated BIOS is available (1.17). If you update to this following https://help.ubuntu.com/community/BIOSUpdate does it change anything? If it doesn't, could you please both specify what happened, and provide the output of the following terminal command: sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette . Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. As well, you don't have to create a new bug report. Once the BIOS is updated, if the problem is still reproducible, and the information above is provided, then please mark this report Status Confirmed. Otherwise, please mark this as Invalid. Thank you for your understanding. ** Tags added: bios-outdated-1.17 ** Changed in: linux (Ubuntu) Importance: Undecided => Low ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Attachment removed: "upstart.unity-panel-service.log.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1507338/+attachment/4499330/+files/upstart.unity-panel-service.log.txt ** Attachment removed: "ProcStatus.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1507338/+attachment/4499329/+files/ProcStatus.txt ** Attachment removed: "ProcMaps.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1507338/+attachment/4499328/+files/ProcMaps.txt ** Attachment removed: "GconfCompiz.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1507338/+attachment/4499326/+files/GconfCompiz.txt ** Attachment removed: "Dependencies.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1507338/+attachment/4499325/+files/Dependencies.txt ** Attachment removed: "JournalErrors.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1507338/+attachment/4499327/+files/JournalErrors.txt ** Description changed: 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 (^@). - ProblemType: Bug - DistroRelease: Ubuntu 15.10 - Package: unity-services 7.3.2+15.10.20151016-0ubuntu1 - ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3 - Uname: Linux 4.2.0-16-generic x86_64 - ApportVersion: 2.19.1-0ubuntu2 - Architecture: amd64 - CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' - CurrentDesktop: Unity - Date: Mon Oct 19 00:29:25 2015 - ExecutablePath: /usr/lib/unity/unity-panel-service - InstallationDate: Installed on 2015-08-22 (57 days ago) - InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) - ProcEnviron: - PATH=(custom, no user) - SHELL=/bin/bash - LANG=en_HK.UTF-8 - LANGUAGE=en_HK:en - XDG_RUNTIME_DIR=<set> - SourcePackage: unity - UpgradeStatus: Upgraded to wily on 2015-10-16 (2 days ago) - --- + --- 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 + 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 + 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 -- 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
