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[Abdul Rehman <abdulrehman272@xxxxxxxx>]

I would love to test the latest kernel, but unfortunately I am busy in
my university project. I will do it ASAP.

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https://bugs.launchpad.net/bugs/1497383

Title:
  While copying from hdd to hdd or hdd to usb ubuntu freezes

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  WDC WD7500BPVT 750GB Advanced format HDD
  deadline scheduler is selected
  parted informs that partitions are aligned
  logical sectors are 512B while physical sectors are 4096 bytes
  hdparm informs speed 96MB/s
  Programs startup is slow.
  S.M.A.R.T assessment is OK.
  HDD operations make system unusable.

  WORKAROUND: Change default dirty_ratio = 60 to 5, and
  dirty_background_ratio = 40 to 10. However, this slows down HDD R/W
  operations.

  ---
  ApportVersion: 2.14.1-0ubuntu3.18
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  abdulrehman   2823 F.... pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=0b208e3a-f2f2-4531-882b-8fbcc2671510
  InstallationDate: Installed on 2015-09-13 (103 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  MachineType: FUJITSU LIFEBOOK AH532
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-53-generic.efi.signed root=UUID=d5974a91-a720-43fb-8e16-3d2e9c7468f0 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.16.0-53.72~14.04.1-generic 3.16.7-ckt18
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-53-generic N/A
   linux-backports-modules-3.16.0-53-generic  N/A
   linux-firmware                             1.127.18
  Tags:  trusty
  Uname: Linux 3.16.0-53-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dialout dip lpadmin plugdev sambashare sudo wireshark
  _MarkForUpload: True
  dmi.bios.date: 05/22/2012
  dmi.bios.vendor: FUJITSU // Phoenix Technologies Ltd.
  dmi.bios.version: Version 1.09
  dmi.board.name: FJNBB1C
  dmi.board.vendor: FUJITSU
  dmi.chassis.type: 10
  dmi.chassis.vendor: FUJITSU
  dmi.modalias: dmi:bvnFUJITSU//PhoenixTechnologiesLtd.:bvrVersion1.09:bd05/22/2012:svnFUJITSU:pnLIFEBOOKAH532:pvr:rvnFUJITSU:rnFJNBB1C:rvr:cvnFUJITSU:ct10:cvr:
  dmi.product.name: LIFEBOOK AH532
  dmi.sys.vendor: FUJITSU

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