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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1320941

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

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

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https://bugs.launchpad.net/bugs/1320941

Title:
  xhci_hcd not loaded

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Today I just tried to copy 4 GB data onto a usb 3.0 stick. However it
  took like forevery and my system load spiked to 6.0. I inquired a bit
  and noticed, that xhci_hcd wasn't loaded at all:

  root@subi:~# lsmod | grep xhci
  root@subi:~# modprobe xhci_hcd
  root@subi:~# lsmod | grep xhci

  The weird thing is, that in dmesg xhci seems to be loaded:

  root@subi:~# dmesg | grep xhci
  [    4.534477] xhci_hcd 0000:00:14.0: xHCI Host Controller
  [    4.534484] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 2
  [    4.534571] xhci_hcd 0000:00:14.0: cache line size of 64 is not supported
  [    4.534594] xhci_hcd 0000:00:14.0: irq 60 for MSI/MSI-X
  [    4.534671] usb usb2: Manufacturer: Linux 3.15.0-031500rc2-generic xhci_hcd
  [    4.535678] xhci_hcd 0000:00:14.0: xHCI Host Controller
  [    4.535684] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 3
  [    4.535737] usb usb3: Manufacturer: Linux 3.15.0-031500rc2-generic xhci_hcd
  [    5.149389] usb 2-2: new high-speed USB device number 2 using xhci_hcd
  [    5.629433] usb 3-3: new SuperSpeed USB device number 2 using xhci_hcd
  [    5.717072] usb 2-2.1: new high-speed USB device number 4 using xhci_hcd
  [    5.877002] usb 2-2.2: new high-speed USB device number 5 using xhci_hcd
  [    6.252828] usb 2-2.2.4: new high-speed USB device number 6 using xhci_hcd
  [    6.644502] usb 2-2.2.4.2: new high-speed USB device number 7 using xhci_hcd
  [   14.160712] usb 2-2.2.4.2.3: new full-speed USB device number 8 using xhci_hcd
  [   14.408571] usb 2-2.2.4.2.4: new full-speed USB device number 9 using xhci_hcd

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.2
  Uname: Linux 3.15.0-031500rc2-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.1
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: KDE
  Date: Mon May 19 18:28:07 2014
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=en_US:en
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  Symptom: ubuntu-release-upgrader
  UpgradeStatus: No upgrade log present (probably fresh install)

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