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[Paul Tomblin <ptomblin@xxxxxxxxx>]

Upgraded to latest Ubuntu kernel 3.13.0-34-generic, and I'm still
getting lots of USB resets. However, unlike when I first reported it, my
backups actually complete, they just take way longer than they used to.

==> /var/log/syslog <==
Aug 14 14:30:04 allhats2 kernel: [ 2955.314829] usb 2-1.6: reset high-speed USB device number 4 using ehci-pci
Aug 14 14:30:41 allhats2 kernel: [ 2992.319768] usb 2-1.6: reset high-speed USB device number 4 using ehci-pci
Aug 14 14:31:35 allhats2 kernel: [ 3046.339829] usb 2-1.6: reset high-speed USB device number 4 using ehci-pci
Aug 14 14:32:30 allhats2 kernel: [ 3101.223427] usb 2-1.6: reset high-speed USB device number 4 using ehci-pci
Aug 14 14:33:28 allhats2 kernel: [ 3159.241465] usb 2-1.6: reset high-speed USB device number 4 using ehci-pci

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https://bugs.launchpad.net/bugs/1350329

Title:
  External USB drives stopped working

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  After a recent kernel upgrade, my external USB drives have become
  unusable. They mount just fine, but when I go to use them, I get a
  bunch of errors. This is from /var/log/syslog:

  Jul 29 11:48:32 allhats2 kernel: [347359.464228] EXT4-fs (dm-31): mounted filesystem with ordered dat
  a mode. Opts: (null)
  Jul 29 11:49:13 allhats2 kernel: [347400.503491] usb 2-1.6: reset high-speed USB device number 7 using ehci-pci
  Jul 29 11:49:18 allhats2 kernel: [347405.517258] sd 6:0:0:0: Device offlined - not ready after error recovery
  Jul 29 11:49:18 allhats2 kernel: [347405.517269] sd 6:0:0:0: [sdd] Unhandled error code
  Jul 29 11:49:18 allhats2 kernel: [347405.517270] sd 6:0:0:0: [sdd]  
  Jul 29 11:49:18 allhats2 kernel: [347405.517271] Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK
  Jul 29 11:49:18 allhats2 kernel: [347405.517273] sd 6:0:0:0: [sdd] CDB: 
  Jul 29 11:49:18 allhats2 kernel: [347405.517274] Write(10): 2a 00 74 44 1c b8 00 00 f0 00
  Jul 29 11:49:18 allhats2 kernel: [347405.517279] end_request: I/O error, dev sdd, sector 1950620856
  Jul 29 11:49:18 allhats2 kernel: [347405.517295] sd 6:0:0:0: rejecting I/O to offline device
  Jul 29 11:49:18 allhats2 kernel: [347405.517297] sd 6:0:0:0: [sdd] killing request

  I suspect it might be related to https://lists.debian.org/debian-
  kernel/2014/03/msg00061.html except I'm seeing it on ehci-pci not
  xHCI.

  I tried booting with my Kubuntu 14.04 CD, and my disks mounted and
  worked just fine.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.2
  ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
  Uname: Linux 3.13.0-32-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: KDE
  Date: Wed Jul 30 08:46:00 2014
  InstallationDate: Installed on 2012-09-15 (682 days ago)
  InstallationMedia: Kubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120822.2)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Symptom: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2014-04-27 (93 days ago)

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