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Message #141047
[Bug 1507338] Re: System freeze with long strings of NUL characters (^@) in the logs
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computer's buggy and outdated BIOS is available (1.17).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** Tags added: bios-outdated-1.17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
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