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[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

The bug is sporadic with the -21 kernel.    Every few reboots the USB
ports will start working again, but most boots they do not.

** Also affects: linux (Ubuntu Xenial)
   Importance: Medium
     Assignee: Joseph Salisbury (jsalisbury)
       Status: In Progress

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https://bugs.launchpad.net/bugs/1573223

Title:
  USB Port stopped working after Xenial update to 4.4.0-21 kernel.

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress

Bug description:
  This system has two USB ports.  Both stopped working after kernel update.  4.4.0-18 did not exhibit the bug.  I'll bisect down the commit that introduced the regression.
  --- 
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  jsalisbury   1643 F.... pulseaudio
   /dev/snd/controlC0:  jsalisbury   1643 F.... pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 16.04
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=144126a6-f9ae-4e87-b9be-8b8234c2aa24
  InstallationDate: Installed on 2016-01-28 (84 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160127)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Intel Corporation Shark Bay Client platform
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-18-generic.efi.signed root=UUID=c8986b4b-317b-40cb-bc39-dfaf4ce1a943 ro crashkernel=384M-:128M
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  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
  Tags:  xenial
  Uname: Linux 4.4.0-21-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 10/02/2013
  dmi.bios.vendor: Intel Corporation
  dmi.bios.version: HSWLPTU1.86C.0134.R00.1310022130
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: Harris Beach SDS
  dmi.board.vendor: Intel Corp.
  dmi.board.version: 4
  dmi.chassis.asset.tag: Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: Intel Corporation
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnIntelCorporation:bvrHSWLPTU1.86C.0134.R00.1310022130:bd10/02/2013:svnIntelCorporation:pnSharkBayClientplatform:pvr0.1:rvnIntelCorp.:rnHarrisBeachSDS:rvr4:cvnIntelCorporation:ct9:cvr0.1:
  dmi.product.name: Shark Bay Client platform
  dmi.product.version: 0.1
  dmi.sys.vendor: Intel Corporation

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