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[Markus Heinz <markus.heinz@xxxxxxxxxxxxxxx>]

As I wrote in the bug description with the distribution kernel "Linux
computer4 3.13.0-71-generic #114-Ubuntu SMP Tue Dec 1 02:34:22 UTC 2015
x86_64 x86_64 x86_64 GNU/Linux" everything is fine.

I have just checked it again: When I boot with the above kernel version,
the CD player application detects the disc independent of it being
inserted before the application is started or thereafter. And no USB
device reset is show in the syslog in both cases.

This is in contrast to the behaviour I have described with the newer
kernel versions.

Kernel version 3.13.0-72 had not been delivered to my installation. With
3.13.0-73 and the following ones the problem is present.

For 3.13.0-72 there is besides other entries the following in the
changelog:

[ Upstream Kernel Changes ]

  * usb: make xhci platform driver use 64 bit or 32 bit DMA
    - LP: #1514971
  * usb: Add support for ACPI identification to xhci-platform
    - LP: #1514971
  * xhci: Workaround to get Intel xHCI reset working more reliably

Perhaps it has something to do with one of these changes.

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

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https://bugs.launchpad.net/bugs/1529077

Title:
  USB device resets since kernel version 3.13.0-73-generic #116-Ubuntu

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  I am using Ubuntu 14.04 with Gnome desktop.

  When running "goobox" (a cd-player application) the application hangs
  for about 30 seconds before being initialized. During this one core of
  the cpu is running at 100% utilization. The following lines appear
  then in the syslog:

  Dec 24 13:14:27 computer4 kernel: [ 1386.238349] usb 3-1: reset high-speed USB device number 2 using xhci_hcd
  Dec 24 13:14:27 computer4 kernel: [ 1386.293951] xhci_hcd 0000:03:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880036272600
  Dec 24 13:14:27 computer4 kernel: [ 1386.293955] xhci_hcd 0000:03:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880036272640

  The CD drive is a external USB one connected to a USB 3.0 port:

  Bus 003 Device 002: ID 0e8d:1806 MediaTek Inc. Samsung SE-208AB Slim
  Portable DVD Writer

  This behaviour appeared with the kernel version 3.13.0-73-generic
  #116-Ubuntu. Running "goobox" on the same system with kernel 3.13.0-71
  does not exhibit this behaviour. Using the newest available kernel
  3.13.0-74 the problem persists.

  Kernel, goobox and the other software are installed from official
  Ubuntu packages.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-73-generic 3.13.0-73.116
  ProcVersionSignature: Ubuntu 3.13.0-73.116-generic 3.13.11-ckt30
  Uname: Linux 3.13.0-73-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  markus     2224 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Thu Dec 24 13:08:36 2015
  HibernationDevice: RESUME=UUID=e711920c-5aab-410e-b993-bb341ddfa987
  InstallationDate: Installed on 2014-12-13 (376 days ago)
  InstallationMedia: Ubuntu-GNOME 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: MICRO-STAR INTERNATIONAL CO., LTD MS-B06211
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-73-generic root=UUID=a501b8b5-7f50-4131-ad2e-cc401009acbf ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-73-generic N/A
   linux-backports-modules-3.13.0-73-generic  N/A
   linux-firmware                             1.127.19
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: yes
   	Hard blocked: no
  SourcePackage: linux
  StagingDrivers: rts5139
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/25/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: EB062IMS V1.4
  dmi.board.name: MS-B0621
  dmi.board.vendor: MICRO-STAR INTERNATIONAL CO., LTD
  dmi.board.version: 100
  dmi.chassis.type: 13
  dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO., LTD
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrEB062IMSV1.4:bd08/25/2014:svnMICRO-STARINTERNATIONALCO.,LTD:pnMS-B06211:pvr:rvnMICRO-STARINTERNATIONALCO.,LTD:rnMS-B0621:rvr100:cvnMICRO-STARINTERNATIONALCO.,LTD:ct13:cvr:
  dmi.product.name: MS-B06211
  dmi.sys.vendor: MICRO-STAR INTERNATIONAL CO., LTD

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