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[Launchpad Bug Tracker <1415377@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/1415377

Title:
  system unresponsive during disk access

Status in linux package in Ubuntu:
  Expired

Bug description:
  The system become unresponsive during disk access. I'm using Ubuntu
  14.04 on a ThinkPad lenovo E540.

  The steps I use to reproduce this bug is:
   - install `stress` package
   - stress the disk (#  stress -d 2 --timeout 20s)
   - during the stress test the system hangs while accessing disk from another process (even ls hangs waiting the stress timeout)

  The problem persist with the upstream kernel 3.19.0-031900rc6-generic

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-44-generic 3.13.0-44.73
  ProcVersionSignature: Ubuntu 3.13.0-44.73-generic 3.13.11-ckt12
  Uname: Linux 3.13.0-44-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.6
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  alepac     2907 F.... pulseaudio
   /dev/snd/controlC1:  alepac     2907 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Jan 28 09:52:50 2015
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=18d574ae-5963-4128-ac7d-93e85043999e
  InstallationDate: Installed on 2014-08-25 (155 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: LENOVO 20C6003QIX
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-44-generic root=UUID=abc61567-9159-409e-becf-f1db0b9bfd8d ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-44-generic N/A
   linux-backports-modules-3.13.0-44-generic  N/A
   linux-firmware                             1.127.11
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  WifiSyslog:
   Jan 28 08:44:21 alepac-lenovo kernel: [  847.480724] warning: `VirtualBox' uses 32-bit capabilities (legacy support in use)
   Jan 28 09:53:06 alepac-lenovo kernel: [ 4975.967152] nouveau E[   PIBUS][0000:01:00.0] GPC0: 0x4188ac 0x00000001 (0x1e70822e)
  dmi.bios.date: 07/31/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: J9ET92WW (2.12 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20C6003QIX
  dmi.board.vendor: LENOVO
  dmi.board.version: 0B98401 PRO
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrJ9ET92WW(2.12):bd07/31/2014:svnLENOVO:pn20C6003QIX:pvrThinkPadEdgeE540:rvnLENOVO:rn20C6003QIX:rvr0B98401PRO:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20C6003QIX
  dmi.product.version: ThinkPad Edge E540
  dmi.sys.vendor: LENOVO

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