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[Vide <vide80@xxxxxxxxx>]

Going back to 4.4.0-21 fixes the problem for me, so I don't know if I'm
hitting the same bug as the bug reporter

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https://bugs.launchpad.net/bugs/1574041

Title:
  xhci_hcd 0000:00:14.0: ERROR Transfer event TRB DMA ptr not part of
  current TD ep_index 3 comp_code 1

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Found following error in dmesg after disconnecting external USB DAC:
  xhci_hcd 0000:00:14.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 3 comp_code 1

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-21-generic 4.4.0-21.37
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/pcmC0D0c:   cromo      2489 F...m pulseaudio
   /dev/snd/pcmC0D0p:   cromo      2489 F...m pulseaudio
   /dev/snd/controlC0:  cromo      2489 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sat Apr 23 12:02:57 2016
  HibernationDevice: RESUME=UUID=3cd6beac-9b2b-4af8-9004-fdec2b01f2df
  InstallationDate: Installed on 2013-04-24 (1095 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130423.1)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 005: ID 0c45:670c Microdia 
   Bus 001 Device 004: ID 04f3:20d0 Elan Microelectronics Corp. 
   Bus 001 Device 003: ID 0a5c:6412 Broadcom Corp. 
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Dell Inc. XPS 13 9350
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=50ed3eed-05f6-4dce-b5d6-86a6519d89c1 ro quiet splash i8042.nopnp vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-21-generic N/A
   linux-backports-modules-4.4.0-21-generic  N/A
   linux-firmware                            1.157
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-03-23 (31 days ago)
  dmi.bios.date: 01/08/2016
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.2.3
  dmi.board.name: 0VM5NC
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvr1.2.3:bd01/08/2016:svnDellInc.:pnXPS139350:pvr:rvnDellInc.:rn0VM5NC:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: XPS 13 9350
  dmi.sys.vendor: Dell Inc.

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