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[Launchpad Bug Tracker <1227023@xxxxxxxxxxxxxxxxxx>]

[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

** Changed in: linux (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1227023

Title:
  8086:0116 [Lenovo IdeaPad U300s] Machine locks up a few times a day

Status in “linux” package in Ubuntu:
  Expired
Status in “linux” source package in Saucy:
  Won't Fix

Bug description:
  My machine is locking up a few times a day. These lockups seem to be
  graphics-related -- they often occur when opening a new tab in
  Chromium or a new window or Unity indicator menu shows on the screen
  -- but are not universally so. Sometimes the machine will lock up of
  its own accord when no-one is using it at all.

  When locked up, the machine is unresponsive to keypresses and mouse
  movements; I cannot, for example, switch to a virtual console. It will
  not answer ssh connections (the network going down is why I think it
  might be a kernel problem rather than X). It *does* respond to
  SysRq+REISUB. However, SysRq+1t does not leave any trace in kern.log
  after a reboot.

  I have run memtest86 overnight and it shows no errors.

  This started happening under raring; I have upgraded to saucy in the
  hope that it would fix the problem and it has not. It occurs using
  both Xorg and Xmir.

  I am unable to trigger the problem at will.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: linux-image-3.11.0-7-generic 3.11.0-7.14
  ProcVersionSignature: Ubuntu 3.11.0-7.14-generic 3.11.1
  Uname: Linux 3.11.0-7-generic x86_64
  ApportVersion: 2.12.2-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  aquarius   3679 F.... pulseaudio
   /dev/snd/controlC0:  aquarius   3679 F.... pulseaudio
  CheckboxSubmission: 4d186c1dd89d3ba4cb89f5ee55713686
  CheckboxSystem: bb422ca46d02494cdbc459927a98bc2f
  Date: Wed Sep 18 10:19:36 2013
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=2a997b66-19bc-46c5-b10c-2d09ecf514eb
  InstallationDate: Installed on 2011-12-11 (646 days ago)
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111211)
  MachineType: LENOVO 1080
  MarkForUpload: True
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-7-generic root=UUID=1897a7e0-a3e7-4d65-811e-c8ffeacf0435 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-7-generic N/A
   linux-backports-modules-3.11.0-7-generic  N/A
   linux-firmware                            1.114
  SourcePackage: linux
  StagingDrivers: zram
  UpgradeStatus: Upgraded to saucy on 2013-09-05 (12 days ago)
  dmi.bios.date: 11/21/2011
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 56CN38WW
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: U300s
  dmi.board.vendor: LENOVO
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo IdeaPad U300s
  dmi.modalias: dmi:bvnLENOVO:bvr56CN38WW:bd11/21/2011:svnLENOVO:pn1080:pvrLenovoIdeaPadU300s:rvnLENOVO:rnU300s:rvr1.0:cvnLENOVO:ct10:cvrLenovoIdeaPadU300s:
  dmi.product.name: 1080
  dmi.product.version: Lenovo IdeaPad U300s
  dmi.sys.vendor: LENOVO

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