kernel-packages team mailing list archive

[Angel Guzman Maeso <shakaran+launchpad@xxxxxxxxx>]

Christopher, as far I can tell, I see this slow copy transfer rates
since Raring at least, but I didn't know then why was the cause for
that. Now it seems the bad detection of USB 2.0. But this could be
failing since 2007 if you read the comments of bug
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/177235

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https://bugs.launchpad.net/bugs/1255522

Title:
  [Acer Aspire 5943G] Slow copy transfer rates by bad USB 2.0 detection
  in external usb storage devices

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Confirmed issue with slow transfer rates (<1.5 MB/s) for 3 different
  external USB 2.0 hardisk (toshiba 1 TB, SAMSUNG 512 GB, Hitachi 1 TB)
  with 3.12.0-4-generic from trusty. It is mainly a bad detection as USB
  1.0 instead of USB 2.0 in dmesg (check_highspeed is indeed bogus).
  Copy 20 GB takes days, instead of hours for this issue. The issue is
  mainly to copy or move files to a USB external storage device from the
  laptop or desktop.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.12.0-4-generic 3.12.0-4.10
  ProcVersionSignature: Ubuntu 3.12.0-4.10-generic 3.12.1
  Uname: Linux 3.12.0-4-generic i686
  NonfreeKernelModules: fglrx
  ApportVersion: 2.12.7-0ubuntu1
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  shakaran   3667 F.... pulseaudio
   /dev/snd/controlC0:  shakaran   3667 F.... pulseaudio
   /dev/snd/pcmC0D0p:   shakaran   3667 F...m pulseaudio
  CurrentDesktop: Unity
  Date: Wed Nov 27 13:19:24 2013
  HibernationDevice: RESUME=UUID=ca085202-e6f9-4736-b311-6d9a361ec3d6
  InstallationDate: Installed on 2013-02-03 (297 days ago)
  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
  MachineType: Acer Aspire 5943G
  ProcFB: 0 simple
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.12.0-4-generic root=UUID=7f18d659-ec06-4afe-b3be-13b15de376b2 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.12.0-4-generic N/A
   linux-backports-modules-3.12.0-4-generic  N/A
   linux-firmware                            1.117
  SourcePackage: linux
  UpgradeStatus: Upgraded to trusty on 2013-10-31 (27 days ago)
  dmi.bios.date: 10/21/2010
  dmi.bios.vendor: Acer
  dmi.bios.version: V1.15
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: Aspire 5943G
  dmi.board.vendor: Acer
  dmi.board.version: V1.15
  dmi.chassis.type: 10
  dmi.chassis.vendor: Acer
  dmi.chassis.version: V1.15
  dmi.modalias: dmi:bvnAcer:bvrV1.15:bd10/21/2010:svnAcer:pnAspire5943G:pvrV1.15:rvnAcer:rnAspire5943G:rvrV1.15:cvnAcer:ct10:cvrV1.15:
  dmi.product.name: Aspire 5943G
  dmi.product.version: V1.15
  dmi.sys.vendor: Acer

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